Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs
===================================================================
diff -u -r560ea9f96409cc65f4666adf212a1c135c5e626f -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision 560ea9f96409cc65f4666adf212a1c135c5e626f)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresFailureMechanism.cs	(.../ClosingStructuresFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.ClosingStructures.Data.Properties;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Calculation;
@@ -37,7 +38,7 @@
     /// </summary>
     public class ClosingStructuresFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<StructuresFailureMechanismSectionResult<ClosingStructuresInput>>
     {
-        private readonly List<StructuresFailureMechanismSectionResult<ClosingStructuresInput>> sectionResults;
+        private readonly ObservableList<StructuresFailureMechanismSectionResult<ClosingStructuresInput>> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="ClosingStructuresFailureMechanism"/> class.
@@ -51,7 +52,7 @@
             };
             GeneralInput = new GeneralClosingStructuresInput();
             ClosingStructures = new StructureCollection<ClosingStructure>();
-            sectionResults = new List<StructuresFailureMechanismSectionResult<ClosingStructuresInput>>();
+            sectionResults = new ObservableList<StructuresFailureMechanismSectionResult<ClosingStructuresInput>>();
             ForeshoreProfiles = new ForeshoreProfileCollection();
         }
 
@@ -80,7 +81,7 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<StructuresFailureMechanismSectionResult<ClosingStructuresInput>> SectionResults
+        public ObservableList<StructuresFailureMechanismSectionResult<ClosingStructuresInput>> SectionResults
         {
             get
             {
Index: Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/IHasSectionResults.cs
===================================================================
diff -u -rb3b6c13cf736c134476b3db34281332d01ca86b1 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/IHasSectionResults.cs	(.../IHasSectionResults.cs)	(revision b3b6c13cf736c134476b3db34281332d01ca86b1)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/IHasSectionResults.cs	(.../IHasSectionResults.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -19,19 +19,19 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System.Collections.Generic;
+using Core.Common.Base;
 
 namespace Ringtoets.Common.Data.FailureMechanism
 {
     /// <summary>
     /// This interface describes methods for obtaining <see cref="FailureMechanismSectionResult"/> objects.
     /// </summary>
-    /// <typeparam name="T"></typeparam>
-    public interface IHasSectionResults<out T> where T : FailureMechanismSectionResult
+    /// <typeparam name="T">The type of the section results in <see cref="SectionResults"/>.</typeparam>
+    public interface IHasSectionResults<T> where T : FailureMechanismSectionResult
     {
         /// <summary>
-        /// Gets an <see cref="IEnumerable{T}"/> of <see cref="FailureMechanismSectionResult"/>.
+        /// Gets an <see cref="ObservableList{T}"/> of <see cref="FailureMechanismSectionResult"/>.
         /// </summary>
-        IEnumerable<T> SectionResults { get; }
+        ObservableList<T> SectionResults { get; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs	(.../TestFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/TestFailureMechanism.cs	(.../TestFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 
@@ -29,7 +30,7 @@
     {
         private const string defaultName = "Test failure mechanism";
         private const string defaultCode = "TFM";
-        private readonly List<FailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<FailureMechanismSectionResult> sectionResults;
 
         public TestFailureMechanism()
             : this(defaultName, defaultCode) {}
@@ -43,13 +44,13 @@
         private TestFailureMechanism(string name, string code, IEnumerable<ICalculation> calculations)
             : base(name, code)
         {
-            sectionResults = new List<FailureMechanismSectionResult>();
+            sectionResults = new ObservableList<FailureMechanismSectionResult>();
             Calculations = calculations;
         }
 
         public override IEnumerable<ICalculation> Calculations { get; }
 
-        public IEnumerable<FailureMechanismSectionResult> SectionResults
+        public ObservableList<FailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanism.cs	(.../DuneErosionFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanism.cs	(.../DuneErosionFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -33,15 +33,15 @@
     /// </summary>
     public class DuneErosionFailureMechanism : FailureMechanismBase, IHasSectionResults<DuneErosionFailureMechanismSectionResult>
     {
-        private readonly List<DuneErosionFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<DuneErosionFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="DuneErosionFailureMechanism"/> class.
         /// </summary>
         public DuneErosionFailureMechanism()
             : base(Resources.DuneErosionFailureMechanism_DisplayName, Resources.DuneErosionFailureMechanism_Code)
         {
-            sectionResults = new List<DuneErosionFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<DuneErosionFailureMechanismSectionResult>();
             GeneralInput = new GeneralDuneErosionInput();
             DuneLocations = new ObservableList<DuneLocation>();
         }
@@ -64,7 +64,7 @@
         /// </summary>
         public ObservableList<DuneLocation> DuneLocations { get; }
 
-        public IEnumerable<DuneErosionFailureMechanismSectionResult> SectionResults
+        public ObservableList<DuneErosionFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs
===================================================================
diff -u -r49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision 49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -34,7 +35,7 @@
     /// </summary>
     public class GrassCoverErosionInwardsFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<GrassCoverErosionInwardsFailureMechanismSectionResult>
     {
-        private readonly List<GrassCoverErosionInwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="GrassCoverErosionInwardsFailureMechanism"/> class.
@@ -47,7 +48,7 @@
                 Name = RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName
             };
             GeneralInput = new GeneralGrassCoverErosionInwardsInput();
-            sectionResults = new List<GrassCoverErosionInwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult>();
             DikeProfiles = new DikeProfileCollection();
         }
 
@@ -71,7 +72,7 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<GrassCoverErosionInwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<GrassCoverErosionInwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanism.cs
===================================================================
diff -u -r49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanism.cs	(.../GrassCoverErosionOutwardsFailureMechanism.cs)	(revision 49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanism.cs	(.../GrassCoverErosionOutwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -38,15 +38,15 @@
     public class GrassCoverErosionOutwardsFailureMechanism : FailureMechanismBase,
                                                              IHasSectionResults<GrassCoverErosionOutwardsFailureMechanismSectionResult>
     {
-        private readonly List<GrassCoverErosionOutwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<GrassCoverErosionOutwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="GrassCoverErosionOutwardsFailureMechanism"/> class.
         /// </summary>
         public GrassCoverErosionOutwardsFailureMechanism()
             : base(Resources.GrassCoverErosionOutwardsFailureMechanism_DisplayName, Resources.GrassCoverErosionOutwardsFailureMechanism_Code)
         {
-            sectionResults = new List<GrassCoverErosionOutwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<GrassCoverErosionOutwardsFailureMechanismSectionResult>();
             GeneralInput = new GeneralGrassCoverErosionOutwardsInput();
             WaveConditionsCalculationGroup = new CalculationGroup
             {
@@ -84,7 +84,7 @@
         /// </summary>
         public ForeshoreProfileCollection ForeshoreProfiles { get; }
 
-        public IEnumerable<GrassCoverErosionOutwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<GrassCoverErosionOutwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs
===================================================================
diff -u -ra23cff5445d53b381fd72f50a0d9b6c200cbcd69 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision a23cff5445d53b381fd72f50a0d9b6c200cbcd69)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
@@ -36,15 +37,15 @@
     /// </summary>
     public class HeightStructuresFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<StructuresFailureMechanismSectionResult<HeightStructuresInput>>
     {
-        private readonly List<StructuresFailureMechanismSectionResult<HeightStructuresInput>> sectionResults;
+        private readonly ObservableList<StructuresFailureMechanismSectionResult<HeightStructuresInput>> sectionResults;
 
         /// <summary>
         /// Creates a new instance of the <see cref="HeightStructuresFailureMechanism"/> class.
         /// </summary>
         public HeightStructuresFailureMechanism()
             : base(Resources.HeightStructuresFailureMechanism_DisplayName, Resources.HeightStructuresFailureMechanism_Code)
         {
-            sectionResults = new List<StructuresFailureMechanismSectionResult<HeightStructuresInput>>();
+            sectionResults = new ObservableList<StructuresFailureMechanismSectionResult<HeightStructuresInput>>();
             CalculationsGroup = new CalculationGroup
             {
                 Name = RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName
@@ -82,7 +83,7 @@
         /// </summary>
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<StructuresFailureMechanismSectionResult<HeightStructuresInput>> SectionResults
+        public ObservableList<StructuresFailureMechanismSectionResult<HeightStructuresInput>> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffInwardsFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffInwardsFailureMechanism.cs	(.../GrassCoverSlipOffInwardsFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffInwardsFailureMechanism.cs	(.../GrassCoverSlipOffInwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class GrassCoverSlipOffInwardsFailureMechanism : FailureMechanismBase, IHasSectionResults<GrassCoverSlipOffInwardsFailureMechanismSectionResult>
     {
-        private readonly List<GrassCoverSlipOffInwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<GrassCoverSlipOffInwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="GrassCoverSlipOffInwardsFailureMechanism"/> class.
         /// </summary>
         public GrassCoverSlipOffInwardsFailureMechanism()
             : base(Resources.GrassCoverSlipOffInwardsFailureMechanism_DisplayName, Resources.GrassCoverSlipOffInwardsFailureMechanism_Code)
         {
-            sectionResults = new List<GrassCoverSlipOffInwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<GrassCoverSlipOffInwardsFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<GrassCoverSlipOffInwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<GrassCoverSlipOffInwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffOutwardsFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffOutwardsFailureMechanism.cs	(.../GrassCoverSlipOffOutwardsFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/GrassCoverSlipOffOutwardsFailureMechanism.cs	(.../GrassCoverSlipOffOutwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class GrassCoverSlipOffOutwardsFailureMechanism : FailureMechanismBase, IHasSectionResults<GrassCoverSlipOffOutwardsFailureMechanismSectionResult>
     {
-        private readonly List<GrassCoverSlipOffOutwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<GrassCoverSlipOffOutwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="GrassCoverSlipOffOutwardsFailureMechanism"/> class.
         /// </summary>
         public GrassCoverSlipOffOutwardsFailureMechanism()
             : base(Resources.GrassCoverSlipOffOutwardsFailureMechanism_DisplayName, Resources.GrassCoverSlipOffOutwardsFailureMechanism_Code)
         {
-            sectionResults = new List<GrassCoverSlipOffOutwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<GrassCoverSlipOffOutwardsFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<GrassCoverSlipOffOutwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<GrassCoverSlipOffOutwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MacroStabilityOutwardsFailureMechanism.cs
===================================================================
diff -u -r36d4b4090a4169cc8d25ede0029a3244df8fe74d -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MacroStabilityOutwardsFailureMechanism.cs	(.../MacroStabilityOutwardsFailureMechanism.cs)	(revision 36d4b4090a4169cc8d25ede0029a3244df8fe74d)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MacroStabilityOutwardsFailureMechanism.cs	(.../MacroStabilityOutwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -34,15 +35,15 @@
     /// </summary>
     public class MacroStabilityOutwardsFailureMechanism : FailureMechanismBase, IHasSectionResults<MacroStabilityOutwardsFailureMechanismSectionResult>
     {
-        private readonly List<MacroStabilityOutwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<MacroStabilityOutwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MacroStabilityOutwardsFailureMechanism"/> class.
         /// </summary>
         public MacroStabilityOutwardsFailureMechanism()
             : base(Resources.MacroStabilityOutwardsFailureMechanism_DisplayName, Resources.MacroStabilityOutwardsFailureMechanism_Code)
         {
-            sectionResults = new List<MacroStabilityOutwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<MacroStabilityOutwardsFailureMechanismSectionResult>();
             MacroStabilityOutwardsProbabilityAssessmentInput = new MacroStabilityOutwardsProbabilityAssessmentInput();
         }
 
@@ -60,7 +61,7 @@
         /// </summary>
         public MacroStabilityOutwardsProbabilityAssessmentInput MacroStabilityOutwardsProbabilityAssessmentInput { get; }
 
-        public IEnumerable<MacroStabilityOutwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<MacroStabilityOutwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MicrostabilityFailureMechanism.cs
===================================================================
diff -u -r5dabca97fffab41012aafa58da5bc4cd0192e947 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MicrostabilityFailureMechanism.cs	(.../MicrostabilityFailureMechanism.cs)	(revision 5dabca97fffab41012aafa58da5bc4cd0192e947)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/MicrostabilityFailureMechanism.cs	(.../MicrostabilityFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class MicrostabilityFailureMechanism : FailureMechanismBase, IHasSectionResults<MicrostabilityFailureMechanismSectionResult>
     {
-        private readonly List<MicrostabilityFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<MicrostabilityFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MicrostabilityFailureMechanism"/> class.
         /// </summary>
         public MicrostabilityFailureMechanism()
             : base(Resources.MicrostabilityFailureMechanism_DisplayName, Resources.MicrostabilityFailureMechanism_Code)
         {
-            sectionResults = new List<MicrostabilityFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<MicrostabilityFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<MicrostabilityFailureMechanismSectionResult> SectionResults
+        public ObservableList<MicrostabilityFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/PipingStructureFailureMechanism.cs
===================================================================
diff -u -r4e11185058b30d0fc525382d015112be4a2e84f8 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/PipingStructureFailureMechanism.cs	(.../PipingStructureFailureMechanism.cs)	(revision 4e11185058b30d0fc525382d015112be4a2e84f8)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/PipingStructureFailureMechanism.cs	(.../PipingStructureFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using Core.Common.Base;
 using Core.Common.Base.Data;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -41,7 +42,7 @@
         private static readonly Range<RoundedDouble> validityRangeN = new Range<RoundedDouble>(new RoundedDouble(numberOfDecimalPlacesN, 1),
                                                                                                new RoundedDouble(numberOfDecimalPlacesN, 20));
 
-        private readonly List<PipingStructureFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<PipingStructureFailureMechanismSectionResult> sectionResults;
         private RoundedDouble n;
 
         /// <summary>
@@ -50,7 +51,7 @@
         public PipingStructureFailureMechanism()
             : base(Resources.PipingStructureFailureMechanism_DisplayName, Resources.PipingStructureFailureMechanism_Code)
         {
-            sectionResults = new List<PipingStructureFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<PipingStructureFailureMechanismSectionResult>();
             n = new RoundedDouble(numberOfDecimalPlacesN, 1.0);
         }
 
@@ -81,7 +82,7 @@
             }
         }
 
-        public IEnumerable<PipingStructureFailureMechanismSectionResult> SectionResults
+        public ObservableList<PipingStructureFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/StrengthStabilityLengthwiseConstructionFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/StrengthStabilityLengthwiseConstructionFailureMechanism.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/StrengthStabilityLengthwiseConstructionFailureMechanism.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class StrengthStabilityLengthwiseConstructionFailureMechanism : FailureMechanismBase, IHasSectionResults<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult>
     {
-        private readonly List<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="StrengthStabilityLengthwiseConstructionFailureMechanism"/> class.
         /// </summary>
         public StrengthStabilityLengthwiseConstructionFailureMechanism()
             : base(Resources.StrengthStabilityLengthwiseConstructionFailureMechanism_DisplayName, Resources.StrengthStabilityLengthwiseConstructionFailureMechanism_Code)
         {
-            sectionResults = new List<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult> SectionResults
+        public ObservableList<StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/TechnicalInnovationFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/TechnicalInnovationFailureMechanism.cs	(.../TechnicalInnovationFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/TechnicalInnovationFailureMechanism.cs	(.../TechnicalInnovationFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class TechnicalInnovationFailureMechanism : FailureMechanismBase, IHasSectionResults<TechnicalInnovationFailureMechanismSectionResult>
     {
-        private readonly List<TechnicalInnovationFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<TechnicalInnovationFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="TechnicalInnovationFailureMechanism"/> class.
         /// </summary>
         public TechnicalInnovationFailureMechanism()
             : base(Resources.TechnicalInnovationFailureMechanismFailureMechanism_DisplayName, Resources.TechnicalInnovationFailureMechanismFailureMechanism_Code)
         {
-            sectionResults = new List<TechnicalInnovationFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<TechnicalInnovationFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<TechnicalInnovationFailureMechanismSectionResult> SectionResults
+        public ObservableList<TechnicalInnovationFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/WaterPressureAsphaltCoverFailureMechanism.cs
===================================================================
diff -u -r0320ab3a413cb6a55e3f615d8c62706a48121588 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/WaterPressureAsphaltCoverFailureMechanism.cs	(.../WaterPressureAsphaltCoverFailureMechanism.cs)	(revision 0320ab3a413cb6a55e3f615d8c62706a48121588)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/WaterPressureAsphaltCoverFailureMechanism.cs	(.../WaterPressureAsphaltCoverFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Integration.Data.Properties;
@@ -33,15 +34,15 @@
     /// </summary>
     public class WaterPressureAsphaltCoverFailureMechanism : FailureMechanismBase, IHasSectionResults<WaterPressureAsphaltCoverFailureMechanismSectionResult>
     {
-        private readonly List<WaterPressureAsphaltCoverFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<WaterPressureAsphaltCoverFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="WaterPressureAsphaltCoverFailureMechanism"/> class.
         /// </summary>
         public WaterPressureAsphaltCoverFailureMechanism()
             : base(Resources.WaterPressureAsphaltCoverFailureMechanism_DisplayName, Resources.WaterPressureAsphaltCoverFailureMechanism_Code)
         {
-            sectionResults = new List<WaterPressureAsphaltCoverFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<WaterPressureAsphaltCoverFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -52,7 +53,7 @@
             }
         }
 
-        public IEnumerable<WaterPressureAsphaltCoverFailureMechanismSectionResult> SectionResults
+        public ObservableList<WaterPressureAsphaltCoverFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/FailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r2ef5183542af0464fab4ebadb3a6c2c4f7ff46b7 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/FailureMechanismContextTreeNodeInfoTest.cs	(.../FailureMechanismContextTreeNodeInfoTest.cs)	(revision 2ef5183542af0464fab4ebadb3a6c2c4f7ff46b7)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/FailureMechanismContextTreeNodeInfoTest.cs	(.../FailureMechanismContextTreeNodeInfoTest.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -501,7 +501,7 @@
 
                 var failureMechanism = mocks.StrictMultiMock<IHasSectionResults<T>>(typeof(IFailureMechanism));
                 failureMechanism.Expect(fm => ((IFailureMechanism) fm).IsRelevant).Return(true);
-                failureMechanism.Expect(fm => fm.SectionResults).Return(new List<T>()).Repeat.Any();
+                failureMechanism.Expect(fm => fm.SectionResults).Return(new ObservableList<T>()).Repeat.Any();
                 failureMechanism.Expect(fm => ((IFailureMechanism) fm).InputComments).Return(new Comment());
                 failureMechanism.Expect(fm => ((IFailureMechanism) fm).OutputComments).Return(new Comment());
                 var failureMechanismContext = mocks.Stub<FailureMechanismContext<IFailureMechanism>>(failureMechanism, assessmentSection);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/MacroStabilityOutwardsFailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r65ce8c5ab171b234e33e2291998c9d89276db896 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/MacroStabilityOutwardsFailureMechanismContextTreeNodeInfoTest.cs	(.../MacroStabilityOutwardsFailureMechanismContextTreeNodeInfoTest.cs)	(revision 65ce8c5ab171b234e33e2291998c9d89276db896)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/MacroStabilityOutwardsFailureMechanismContextTreeNodeInfoTest.cs	(.../MacroStabilityOutwardsFailureMechanismContextTreeNodeInfoTest.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -413,7 +413,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             var failureMechanism = mocks.StrictMultiMock<IHasSectionResults<T>>(typeof(IFailureMechanism));
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).IsRelevant).Return(true);
-            failureMechanism.Expect(fm => fm.SectionResults).Return(new List<T>()).Repeat.Any();
+            failureMechanism.Expect(fm => fm.SectionResults).Return(new ObservableList<T>()).Repeat.Any();
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).InputComments).Return(new Comment());
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).OutputComments).Return(new Comment());
             var failureMechanismContext = mocks.Stub<MacroStabilityOutwardsFailureMechanismContext>(failureMechanism, assessmentSection);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/PipingStructureFailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r65ce8c5ab171b234e33e2291998c9d89276db896 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/PipingStructureFailureMechanismContextTreeNodeInfoTest.cs	(.../PipingStructureFailureMechanismContextTreeNodeInfoTest.cs)	(revision 65ce8c5ab171b234e33e2291998c9d89276db896)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/TreeNodeInfos/PipingStructureFailureMechanismContextTreeNodeInfoTest.cs	(.../PipingStructureFailureMechanismContextTreeNodeInfoTest.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -413,7 +413,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             var failureMechanism = mocks.StrictMultiMock<IHasSectionResults<T>>(typeof(IFailureMechanism));
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).IsRelevant).Return(true);
-            failureMechanism.Expect(fm => fm.SectionResults).Return(new List<T>()).Repeat.Any();
+            failureMechanism.Expect(fm => fm.SectionResults).Return(new ObservableList<T>()).Repeat.Any();
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).InputComments).Return(new Comment());
             failureMechanism.Expect(fm => ((IFailureMechanism) fm).OutputComments).Return(new Comment());
             var failureMechanismContext = mocks.Stub<PipingStructureFailureMechanismContext>(failureMechanism, assessmentSection);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs
===================================================================
diff -u -r2ef5183542af0464fab4ebadb3a6c2c4f7ff46b7 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision 2ef5183542af0464fab4ebadb3a6c2c4f7ff46b7)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -41,6 +41,7 @@
 using Ringtoets.HeightStructures.Data;
 using Ringtoets.Integration.Data;
 using Ringtoets.Integration.Data.StandAlone;
+using Ringtoets.Integration.Data.StandAlone.SectionResults;
 using Ringtoets.Integration.TestUtil;
 using Ringtoets.MacroStabilityInwards.Data;
 using Ringtoets.MacroStabilityInwards.Data.SoilProfile;
@@ -110,9 +111,9 @@
                                                                                 .GetFailureMechanisms()
                                                                                 .ToList();
             IEnumerable<ICalculation> expectedAffectedItems = failureMechanisms
-                .SelectMany(f => f.Calculations)
-                .Where(c => c.HasOutput)
-                .ToList();
+                                                              .SelectMany(f => f.Calculations)
+                                                              .Where(c => c.HasOutput)
+                                                              .ToList();
 
             // Call
             IEnumerable<IObservable> affectedItems = RingtoetsDataSynchronizationService.ClearFailureMechanismCalculationOutputs(failureMechanisms);
@@ -121,8 +122,8 @@
             // Note: To make sure the clear is performed regardless of what is done with
             // the return result, no ToArray() should be called before these assertions:
             CollectionAssert.IsEmpty(failureMechanisms
-                                         .SelectMany(f => f.Calculations)
-                                         .Where(c => c.HasOutput));
+                                     .SelectMany(f => f.Calculations)
+                                     .Where(c => c.HasOutput));
 
             CollectionAssert.AreEquivalent(expectedAffectedItems, affectedItems);
         }
@@ -328,6 +329,7 @@
             {
                 expectedAffectedItems.Add(grassCoverErosionLocation);
             }
+
             if (duneLocation.Calculation.Output != null)
             {
                 expectedAffectedItems.Add(duneLocation);
@@ -392,6 +394,7 @@
             {
                 expectedAffectedItems.Add(grassCoverErosionLocation);
             }
+
             if (duneLocation.Calculation.Output != null)
             {
                 expectedAffectedItems.Add(duneLocation);
@@ -448,10 +451,12 @@
             {
                 expectedAffectedItems.Add(hydraulicBoundaryLocation);
             }
+
             if (HasHydraulicBoundaryLocationOutput(grassCoverErosionLocation))
             {
                 expectedAffectedItems.Add(grassCoverErosionLocation);
             }
+
             if (duneLocation.Calculation.Output != null)
             {
                 expectedAffectedItems.Add(duneLocation);
@@ -861,6 +866,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -936,6 +942,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -1010,6 +1017,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -1085,6 +1093,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -1160,6 +1169,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -1235,6 +1245,7 @@
                 Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+
             foreach (ICalculation calculation in calculationsWithOutput)
             {
                 Assert.IsFalse(calculation.HasOutput);
@@ -1376,6 +1387,7 @@
             {
                 Assert.IsNull(calculation.InputParameters.DikeProfile);
             }
+
             foreach (GrassCoverErosionInwardsFailureMechanismSectionResult sectionResult in sectionResults)
             {
                 Assert.IsNull(sectionResult.Calculation);
@@ -1390,214 +1402,259 @@
                 CollectionAssert.Contains(array, calculation.InputParameters);
                 Assert.IsFalse(calculation.HasOutput);
             }
+
             foreach (GrassCoverErosionInwardsFailureMechanismSectionResult sectionResult in sectionResults)
             {
                 CollectionAssert.Contains(array, sectionResult);
             }
+
             Assert.AreEqual(originalNumberOfSectionResultAssignments - sectionResults.Length, failureMechanism.SectionResults.Count(sr => sr.Calculation != null),
                             "Other section results with a different calculation/dikeprofile should still have their association.");
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(AssessmentSection assessmentSection)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(AssessmentSection assessmentSection)
         {
             var expectedRemovedObjects = new List<object>();
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.Piping));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.GrassCoverErosionInwards));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.MacroStabilityInwards));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.MacroStabilityOutwards));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.Microstability));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<MacroStabilityOutwardsFailureMechanism,
+                                                MacroStabilityOutwardsFailureMechanismSectionResult>(assessmentSection.MacroStabilityOutwards));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<MicrostabilityFailureMechanism,
+                                                MicrostabilityFailureMechanismSectionResult>(assessmentSection.Microstability));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.StabilityStoneCover));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.WaveImpactAsphaltCover));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.WaterPressureAsphaltCover));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<WaterPressureAsphaltCoverFailureMechanism,
+                                                WaterPressureAsphaltCoverFailureMechanismSectionResult>(assessmentSection.WaterPressureAsphaltCover));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.GrassCoverErosionOutwards));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.GrassCoverSlipOffOutwards));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.GrassCoverSlipOffInwards));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverSlipOffOutwardsFailureMechanism,
+                                                GrassCoverSlipOffOutwardsFailureMechanismSectionResult>(assessmentSection.GrassCoverSlipOffOutwards));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverSlipOffInwardsFailureMechanism,
+                                                GrassCoverSlipOffInwardsFailureMechanismSectionResult>(assessmentSection.GrassCoverSlipOffInwards));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.HeightStructures));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.ClosingStructures));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.PipingStructure));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<PipingStructureFailureMechanism,
+                                                PipingStructureFailureMechanismSectionResult>(assessmentSection.PipingStructure));
             expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.StabilityPointStructures));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.StrengthStabilityLengthwiseConstruction));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.DuneErosion));
-            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine(assessmentSection.TechnicalInnovation));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<StrengthStabilityLengthwiseConstructionFailureMechanism,
+                                                StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult>(assessmentSection.StrengthStabilityLengthwiseConstruction));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<DuneErosionFailureMechanism,
+                                                DuneErosionFailureMechanismSectionResult>(assessmentSection.DuneErosion));
+            expectedRemovedObjects.AddRange(GetExpectedRemovedObjectsWhenClearingReferenceLine<TechnicalInnovationFailureMechanism,
+                                                TechnicalInnovationFailureMechanismSectionResult>(assessmentSection.TechnicalInnovation));
             if (assessmentSection.ReferenceLine != null)
             {
                 expectedRemovedObjects.Add(assessmentSection.ReferenceLine);
             }
+
             return expectedRemovedObjects;
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(PipingFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(PipingFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<PipingFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<PipingFailureMechanism,
+                PipingFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (PipingStochasticSoilModel stochasticSoilModel in failureMechanism.StochasticSoilModels)
             {
                 yield return stochasticSoilModel;
             }
+
             foreach (PipingSurfaceLine surfaceLine in failureMechanism.SurfaceLines)
             {
                 yield return surfaceLine;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(MacroStabilityInwardsFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(MacroStabilityInwardsFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<MacroStabilityInwardsFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<MacroStabilityInwardsFailureMechanism,
+                MacroStabilityInwardsFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (MacroStabilityInwardsStochasticSoilModel stochasticSoilModel in failureMechanism.StochasticSoilModels)
             {
                 yield return stochasticSoilModel;
             }
+
             foreach (MacroStabilityInwardsSurfaceLine surfaceLine in failureMechanism.SurfaceLines)
             {
                 yield return surfaceLine;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(GrassCoverErosionInwardsFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(GrassCoverErosionInwardsFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverErosionInwardsFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverErosionInwardsFailureMechanism,
+                GrassCoverErosionInwardsFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (DikeProfile profile in failureMechanism.DikeProfiles)
             {
                 yield return profile;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(StabilityStoneCoverFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(StabilityStoneCoverFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<StabilityStoneCoverFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<StabilityStoneCoverFailureMechanism,
+                StabilityStoneCoverFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.WaveConditionsCalculationGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(WaveImpactAsphaltCoverFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(WaveImpactAsphaltCoverFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<WaveImpactAsphaltCoverFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<WaveImpactAsphaltCoverFailureMechanism,
+                WaveImpactAsphaltCoverFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.WaveConditionsCalculationGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(GrassCoverErosionOutwardsFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(GrassCoverErosionOutwardsFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverErosionOutwardsFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<GrassCoverErosionOutwardsFailureMechanism,
+                GrassCoverErosionOutwardsFailureMechanismSectionResult>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.WaveConditionsCalculationGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(HeightStructuresFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(HeightStructuresFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<HeightStructuresFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<HeightStructuresFailureMechanism,
+                StructuresFailureMechanismSectionResult<HeightStructuresInput>>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
+
             foreach (HeightStructure structure in failureMechanism.HeightStructures)
             {
                 yield return structure;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(ClosingStructuresFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(ClosingStructuresFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<ClosingStructuresFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<ClosingStructuresFailureMechanism, StructuresFailureMechanismSectionResult<ClosingStructuresInput>>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
+
             foreach (ClosingStructure structure in failureMechanism.ClosingStructures)
             {
                 yield return structure;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(StabilityPointStructuresFailureMechanism failureMechanism)
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine(StabilityPointStructuresFailureMechanism failureMechanism)
         {
-            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<StabilityPointStructuresFailureMechanism>(failureMechanism))
+            foreach (object failureMechanismObject in GetExpectedRemovedObjectsWhenClearingReferenceLine<StabilityPointStructuresFailureMechanism,
+                StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>>(failureMechanism))
             {
                 yield return failureMechanismObject;
             }
+
             foreach (ICalculationBase calculationBase in failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
             {
                 yield return calculationBase;
             }
+
             foreach (ForeshoreProfile profile in failureMechanism.ForeshoreProfiles)
             {
                 yield return profile;
             }
+
             foreach (StabilityPointStructure structure in failureMechanism.StabilityPointStructures)
             {
                 yield return structure;
             }
         }
 
-        private IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine<T>(T failureMechanism)
-            where T : IFailureMechanism, IHasSectionResults<FailureMechanismSectionResult>
+        private static IEnumerable<object> GetExpectedRemovedObjectsWhenClearingReferenceLine<TFailureMechanism, TSectionResult>(TFailureMechanism failureMechanism)
+            where TFailureMechanism : IFailureMechanism, IHasSectionResults<TSectionResult>
+            where TSectionResult : FailureMechanismSectionResult
         {
             foreach (FailureMechanismSection section in failureMechanism.Sections)
             {
                 yield return section;
             }
-            foreach (FailureMechanismSectionResult sectionResult in failureMechanism.SectionResults)
+
+            foreach (TSectionResult sectionResult in failureMechanism.SectionResults)
             {
                 yield return sectionResult;
             }
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanism.cs
===================================================================
diff -u -r49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanism.cs	(.../MacroStabilityInwardsFailureMechanism.cs)	(revision 49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanism.cs	(.../MacroStabilityInwardsFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.MacroStabilityInwards.Data.Properties;
@@ -33,7 +34,7 @@
     /// </summary>
     public class MacroStabilityInwardsFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<MacroStabilityInwardsFailureMechanismSectionResult>
     {
-        private readonly List<MacroStabilityInwardsFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<MacroStabilityInwardsFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MacroStabilityInwardsFailureMechanism"/> class.
@@ -49,7 +50,7 @@
                 Name = RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName
             };
 
-            sectionResults = new List<MacroStabilityInwardsFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<MacroStabilityInwardsFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -78,7 +79,7 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<MacroStabilityInwardsFailureMechanismSectionResult> SectionResults
+        public ObservableList<MacroStabilityInwardsFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs
===================================================================
diff -u -r49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Piping.Data.SoilProfile;
@@ -33,7 +34,7 @@
     /// </summary>
     public class PipingFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<PipingFailureMechanismSectionResult>
     {
-        private readonly List<PipingFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<PipingFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="PipingFailureMechanism"/> class.
@@ -50,7 +51,7 @@
                 Name = RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName
             };
 
-            sectionResults = new List<PipingFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<PipingFailureMechanismSectionResult>();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -84,7 +85,7 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<PipingFailureMechanismSectionResult> SectionResults
+        public ObservableList<PipingFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresFailureMechanism.cs
===================================================================
diff -u -r56246f10e7876b30f36a5b9709ec2e3332b4010a -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresFailureMechanism.cs	(.../StabilityPointStructuresFailureMechanism.cs)	(revision 56246f10e7876b30f36a5b9709ec2e3332b4010a)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresFailureMechanism.cs	(.../StabilityPointStructuresFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
@@ -37,7 +38,7 @@
     /// </summary>
     public class StabilityPointStructuresFailureMechanism : FailureMechanismBase, ICalculatableFailureMechanism, IHasSectionResults<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>>
     {
-        private readonly List<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>> sectionResults;
+        private readonly ObservableList<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="StabilityPointStructuresFailureMechanism"/> class.
@@ -51,7 +52,7 @@
             };
             GeneralInput = new GeneralStabilityPointStructuresInput();
             StabilityPointStructures = new StructureCollection<StabilityPointStructure>();
-            sectionResults = new List<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>>();
+            sectionResults = new ObservableList<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>>();
             ForeshoreProfiles = new ForeshoreProfileCollection();
         }
 
@@ -80,7 +81,7 @@
 
         public CalculationGroup CalculationsGroup { get; }
 
-        public IEnumerable<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>> SectionResults
+        public ObservableList<StructuresFailureMechanismSectionResult<StabilityPointStructuresInput>> SectionResults
         {
             get
             {
Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanism.cs
===================================================================
diff -u -r49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanism.cs	(.../StabilityStoneCoverFailureMechanism.cs)	(revision 49621ecdce5a2a8f7c8bb689e8cfd6759dfb8fc6)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanism.cs	(.../StabilityStoneCoverFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -35,15 +36,15 @@
     /// </summary>
     public class StabilityStoneCoverFailureMechanism : FailureMechanismBase, IHasSectionResults<StabilityStoneCoverFailureMechanismSectionResult>
     {
-        private readonly List<StabilityStoneCoverFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<StabilityStoneCoverFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="StabilityStoneCoverFailureMechanism"/> class.
         /// </summary>
         public StabilityStoneCoverFailureMechanism()
             : base(Resources.StabilityStoneCoverFailureMechanism_DisplayName, Resources.StabilityStoneCoverFailureMechanism_Code)
         {
-            sectionResults = new List<StabilityStoneCoverFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<StabilityStoneCoverFailureMechanismSectionResult>();
             WaveConditionsCalculationGroup = new CalculationGroup
             {
                 Name = RingtoetsCommonDataResources.HydraulicBoundaryConditions_DisplayName
@@ -75,7 +76,7 @@
         /// </summary>
         public ForeshoreProfileCollection ForeshoreProfiles { get; }
 
-        public IEnumerable<StabilityStoneCoverFailureMechanismSectionResult> SectionResults
+        public ObservableList<StabilityStoneCoverFailureMechanismSectionResult> SectionResults
         {
             get
             {
Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanism.cs
===================================================================
diff -u -ra663d0eb4c24012fdfafc00ee7aaffb18e75cb96 -rc3641f1375abfabf1c8093037c0cccd3eb77d52a
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanism.cs	(.../WaveImpactAsphaltCoverFailureMechanism.cs)	(revision a663d0eb4c24012fdfafc00ee7aaffb18e75cb96)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanism.cs	(.../WaveImpactAsphaltCoverFailureMechanism.cs)	(revision c3641f1375abfabf1c8093037c0cccd3eb77d52a)
@@ -21,6 +21,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.DikeProfiles;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -36,15 +37,15 @@
     /// </summary>
     public class WaveImpactAsphaltCoverFailureMechanism : FailureMechanismBase, IHasSectionResults<WaveImpactAsphaltCoverFailureMechanismSectionResult>
     {
-        private readonly List<WaveImpactAsphaltCoverFailureMechanismSectionResult> sectionResults;
+        private readonly ObservableList<WaveImpactAsphaltCoverFailureMechanismSectionResult> sectionResults;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="WaveImpactAsphaltCoverFailureMechanism"/> class.
         /// </summary>
         public WaveImpactAsphaltCoverFailureMechanism()
             : base(Resources.WaveImpactAsphaltCoverFailureMechanism_DisplayName, Resources.WaveImpactAsphaltCoverFailureMechanism_Code)
         {
-            sectionResults = new List<WaveImpactAsphaltCoverFailureMechanismSectionResult>();
+            sectionResults = new ObservableList<WaveImpactAsphaltCoverFailureMechanismSectionResult>();
             WaveConditionsCalculationGroup = new CalculationGroup
             {
                 Name = RingtoetsCommonDataResources.HydraulicBoundaryConditions_DisplayName
@@ -82,7 +83,7 @@
         /// </summary>
         public CalculationGroup WaveConditionsCalculationGroup { get; }
 
-        public IEnumerable<WaveImpactAsphaltCoverFailureMechanismSectionResult> SectionResults
+        public ObservableList<WaveImpactAsphaltCoverFailureMechanismSectionResult> SectionResults
         {
             get
             {