Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs
===================================================================
diff -u -r72a88039f44f5aaa309780a3f572f2ad2433a8dc -r87eb4d4bbcd9f5f224a87484c53f9ff095d6819e
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs	(.../RingtoetsDataSynchronizationService.cs)	(revision 72a88039f44f5aaa309780a3f572f2ad2433a8dc)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs	(.../RingtoetsDataSynchronizationService.cs)	(revision 87eb4d4bbcd9f5f224a87484c53f9ff095d6819e)
@@ -155,7 +155,7 @@
         /// <summary>
         /// Clears the output of all calculations of the given <paramref name="failureMechanisms"/>.
         /// </summary>
-        /// <param name="failureMechanisms">The failure mechanisms that contains the calculations.</param>
+        /// <param name="failureMechanisms">The failure mechanisms that contain the calculations.</param>
         /// <returns>An <see cref="IEnumerable{T}"/> of calculations that are affected by clearing the output.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanisms"/> is <c>null</c>.</exception>
         public static IEnumerable<IObservable> ClearFailureMechanismCalculationOutputs(IEnumerable<IFailureMechanism> failureMechanisms)
@@ -229,12 +229,13 @@
         }
 
         /// <summary>
-        /// Clears the hydraulic boundary location calculation output that is contained within specific failure mechanisms of the <paramref name="assessmentSection"/>
-        /// and within it.
+        /// Clears the hydraulic boundary location calculation output that is contained 
+        /// within specific failure mechanisms of the <paramref name="assessmentSection"/>.
         /// </summary>
-        /// <param name="assessmentSection">The <see cref="IAssessmentSection"/> which contains the failure mechanisms.</param>
+        /// <param name="assessmentSection">The <see cref="IAssessmentSection"/> which contains the hydraulic boundary 
+        /// location calculations and failure mechanisms at stake.</param>
         /// <returns>All objects affected by the operation.</returns>
-        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/> is <c>null</c>.</exception>
         public static IEnumerable<IObservable> ClearHydraulicBoundaryLocationCalculationOutput(IAssessmentSection assessmentSection)
         {
             if (assessmentSection == null)
@@ -275,7 +276,7 @@
         }
 
         /// <summary>
-        /// Clears the hydraulic boundary location calculation output that is contained within specific <paramref name="failureMechanisms"/>.
+        /// Clears the hydraulic boundary location calculation output that is contained within <paramref name="failureMechanisms"/>.
         /// </summary>
         /// <param name="failureMechanisms">The failure mechanisms to clear the hydraulic boundary location calculation output for.</param>
         /// <returns>All objects affected by the operation.</returns>
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/AssessmentSectionCompositionChangeHandlerTest.cs
===================================================================
diff -u -r89547a60aa8be73beada947969a59050eaca5fb6 -r87eb4d4bbcd9f5f224a87484c53f9ff095d6819e
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/AssessmentSectionCompositionChangeHandlerTest.cs	(.../AssessmentSectionCompositionChangeHandlerTest.cs)	(revision 89547a60aa8be73beada947969a59050eaca5fb6)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/AssessmentSectionCompositionChangeHandlerTest.cs	(.../AssessmentSectionCompositionChangeHandlerTest.cs)	(revision 87eb4d4bbcd9f5f224a87484c53f9ff095d6819e)
@@ -218,7 +218,7 @@
             Assert.True(calculationsWithOutput.All(c => c.HasOutput),
                         "All calculations that had output still have them.");
 
-            Assert.True(duneLocationCalculationsWithOutput.All(calc => calc.Output != null));
+            Assert.True(duneLocationCalculationsWithOutput.All(HasDuneErosionLocationCalculationOutput));
             Assert.True(hydraulicBoundaryLocationCalculationsWithOutput.All(calc => calc.HasOutput));
 
             CollectionAssert.IsEmpty(affectedObjects);
@@ -598,7 +598,7 @@
 
         #endregion
 
-        #region Dune Erosion Failure Mechanism Helpers
+        #region Dune Erosion failure mechanism Helpers
 
         private static IEnumerable<IObservable> GetAllAffectedDuneErosionLocationCalculations(DuneErosionFailureMechanism failureMechanism)
         {
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/FailureMechanismContributionNormChangeHandlerTest.cs
===================================================================
diff -u -re57e79927485e44d681b0617f17bada42dbfb862 -r87eb4d4bbcd9f5f224a87484c53f9ff095d6819e
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/FailureMechanismContributionNormChangeHandlerTest.cs	(.../FailureMechanismContributionNormChangeHandlerTest.cs)	(revision e57e79927485e44d681b0617f17bada42dbfb862)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/FailureMechanismContributionNormChangeHandlerTest.cs	(.../FailureMechanismContributionNormChangeHandlerTest.cs)	(revision 87eb4d4bbcd9f5f224a87484c53f9ff095d6819e)
@@ -143,7 +143,7 @@
                                             .Concat(assessmentSection.WaveHeightCalculationsForLowerLimitNorm)
                                             .Concat(assessmentSection.WaveHeightCalculationsForFactorizedLowerLimitNorm)
                                             .Concat(GetAllAffectedGrassCoverErosionOutwardsHydraulicBoundaryLocationCalculations(assessmentSection.GrassCoverErosionOutwards))
-                                            .Concat(GetAllAffectedDuneErosionLocationCalculations(assessmentSection.DuneErosion))
+                                            .Concat(GetAllAffectedDuneLocationCalculations(assessmentSection.DuneErosion))
                                             .Concat(new IObservable[]
                                             {
                                                 assessmentSection.FailureMechanismContribution
@@ -196,7 +196,7 @@
                                  .Concat(assessmentSection.WaveHeightCalculationsForLowerLimitNorm)
                                  .Concat(assessmentSection.WaveHeightCalculationsForFactorizedLowerLimitNorm)
                                  .Concat(GetAllAffectedGrassCoverErosionOutwardsHydraulicBoundaryLocationCalculations(assessmentSection.GrassCoverErosionOutwards))
-                                 .Concat(GetAllAffectedDuneErosionLocationCalculations(assessmentSection.DuneErosion))
+                                 .Concat(GetAllAffectedDuneLocationCalculations(assessmentSection.DuneErosion))
                                  .Concat(new IObservable[]
                                  {
                                      assessmentSection.FailureMechanismContribution
@@ -339,7 +339,7 @@
             return GrassCoverErosionOutwardsHydraulicBoundaryLocationsTestHelper.GetAllHydraulicBoundaryLocationCalculationsWithOutput(failureMechanism);
         }
 
-        private static IEnumerable<IObservable> GetAllAffectedDuneErosionLocationCalculations(DuneErosionFailureMechanism failureMechanism)
+        private static IEnumerable<IObservable> GetAllAffectedDuneLocationCalculations(DuneErosionFailureMechanism failureMechanism)
         {
             return DuneErosionLocationsTestHelper.GetAllDuneErosionLocationCalculationsWithOutput(failureMechanism);
         }
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs
===================================================================
diff -u -re57e79927485e44d681b0617f17bada42dbfb862 -r87eb4d4bbcd9f5f224a87484c53f9ff095d6819e
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision e57e79927485e44d681b0617f17bada42dbfb862)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision 87eb4d4bbcd9f5f224a87484c53f9ff095d6819e)
@@ -274,9 +274,10 @@
                 }
             };
 
-            assessmentSection.DuneErosion.SetDuneLocations(new []
+            DuneErosionFailureMechanism duneErosionFailureMechanism = assessmentSection.DuneErosion;
+            duneErosionFailureMechanism.SetDuneLocations(new[]
             {
-                duneLocation1, 
+                duneLocation1,
                 duneLocation2
             });
 
@@ -339,7 +340,19 @@
             grassHydraulicBoundaryLocationCalculation5.Output = new TestHydraulicBoundaryLocationCalculationOutput();
             grassHydraulicBoundaryLocationCalculation6.Output = new TestHydraulicBoundaryLocationCalculationOutput();
 
-            var expectedAffectedItems = new List<IObservable>
+            DuneLocationCalculation duneLocationCalculation1 = duneErosionFailureMechanism.CalculationsForMechanismSpecificFactorizedSignalingNorm.First(c => ReferenceEquals(c.DuneLocation, duneLocation1));
+            DuneLocationCalculation duneLocationCalculation2 = duneErosionFailureMechanism.CalculationsForMechanismSpecificSignalingNorm.First(c => ReferenceEquals(c.DuneLocation, duneLocation1));
+            DuneLocationCalculation duneLocationCalculation3 = duneErosionFailureMechanism.CalculationsForMechanismSpecificLowerLimitNorm.First(c => ReferenceEquals(c.DuneLocation, duneLocation1));
+            DuneLocationCalculation duneLocationCalculation4 = duneErosionFailureMechanism.CalculationsForLowerLimitNorm.First(c => ReferenceEquals(c.DuneLocation, duneLocation1));
+            DuneLocationCalculation duneLocationCalculation5 = duneErosionFailureMechanism.CalculationsForFactorizedLowerLimitNorm.First(c => ReferenceEquals(c.DuneLocation, duneLocation1));
+
+            duneLocationCalculation1.Output = new TestDuneLocationCalculationOutput();
+            duneLocationCalculation2.Output = new TestDuneLocationCalculationOutput();
+            duneLocationCalculation3.Output = new TestDuneLocationCalculationOutput();
+            duneLocationCalculation4.Output = new TestDuneLocationCalculationOutput();
+            duneLocationCalculation5.Output = new TestDuneLocationCalculationOutput();
+
+            var expectedAffectedItems = new IObservable[]
             {
                 hydraulicBoundaryLocationCalculation1,
                 hydraulicBoundaryLocationCalculation2,
@@ -355,7 +368,12 @@
                 grassHydraulicBoundaryLocationCalculation4,
                 grassHydraulicBoundaryLocationCalculation5,
                 grassHydraulicBoundaryLocationCalculation6,
-                duneLocation1
+                duneLocation1,
+                duneLocationCalculation1,
+                duneLocationCalculation2,
+                duneLocationCalculation3,
+                duneLocationCalculation4,
+                duneLocationCalculation5
             };
 
             // Call
@@ -380,6 +398,11 @@
             Assert.IsFalse(grassHydraulicBoundaryLocationCalculation6.HasOutput);
 
             Assert.IsNull(duneLocation1.Calculation.Output);
+            Assert.IsNull(duneLocationCalculation1.Output);
+            Assert.IsNull(duneLocationCalculation2.Output);
+            Assert.IsNull(duneLocationCalculation3.Output);
+            Assert.IsNull(duneLocationCalculation4.Output);
+            Assert.IsNull(duneLocationCalculation5.Output);
         }
 
         [Test]