Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj
===================================================================
diff -u -r570695e818fcf887563710ad6d26df301be56227 -r1e6314ff2b8eb58d3630a7989e5aed022e13d35e
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj	(.../Ringtoets.Integration.Service.csproj)	(revision 570695e818fcf887563710ad6d26df301be56227)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/Ringtoets.Integration.Service.csproj	(.../Ringtoets.Integration.Service.csproj)	(revision 1e6314ff2b8eb58d3630a7989e5aed022e13d35e)
@@ -115,6 +115,14 @@
       <Name>Ringtoets.HeightStructures.Service</Name>
       <Private>False</Private>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\MacroStabilityInwards\src\Ringtoets.MacroStabilityInwards.Data\Ringtoets.MacroStabilityInwards.Data.csproj">
+      <Project>{83D6B73E-91D5-46B0-9218-955DA1F75F7C}</Project>
+      <Name>Ringtoets.MacroStabilityInwards.Data</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\MacroStabilityInwards\src\Ringtoets.MacroStabilityInwards.Service\Ringtoets.MacroStabilityInwards.Service.csproj">
+      <Project>{55BE9A1B-68AB-488F-AF20-E037A50063DB}</Project>
+      <Name>Ringtoets.MacroStabilityInwards.Service</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Piping\src\Ringtoets.Piping.Data\Ringtoets.Piping.Data.csproj">
       <Project>{CE994CC9-6F6A-48AC-B4BE-02C30A21F4DB}</Project>
       <Name>Ringtoets.Piping.Data</Name>
Index: Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs
===================================================================
diff -u -r5ee23018be55ff03a7851e54ca0a6682c521f952 -r1e6314ff2b8eb58d3630a7989e5aed022e13d35e
--- Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs	(.../RingtoetsDataSynchronizationService.cs)	(revision 5ee23018be55ff03a7851e54ca0a6682c521f952)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Service/RingtoetsDataSynchronizationService.cs	(.../RingtoetsDataSynchronizationService.cs)	(revision 1e6314ff2b8eb58d3630a7989e5aed022e13d35e)
@@ -41,6 +41,8 @@
 using Ringtoets.GrassCoverErosionOutwards.Service;
 using Ringtoets.HeightStructures.Data;
 using Ringtoets.HeightStructures.Service;
+using Ringtoets.MacroStabilityInwards.Data;
+using Ringtoets.MacroStabilityInwards.Service;
 using Ringtoets.Piping.Data;
 using Ringtoets.Piping.Service;
 using Ringtoets.Revetment.Data;
@@ -630,6 +632,12 @@
                 return PipingDataSynchronizationService.ClearReferenceLineDependentData(pipingFailureMechanism);
             }
 
+            var macroStabilityInwardsFailureMechanism = failureMechanism as MacroStabilityInwardsFailureMechanism;
+            if (macroStabilityInwardsFailureMechanism != null)
+            {
+                return MacroStabilityInwardsDataSynchronizationService.ClearReferenceLineDependentData(macroStabilityInwardsFailureMechanism);
+            }
+
             var grassCoverErosionInwardsFailureMechanism = failureMechanism as GrassCoverErosionInwardsFailureMechanism;
             if (grassCoverErosionInwardsFailureMechanism != null)
             {
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/ReferenceLineReplacementHandlerTest.cs
===================================================================
diff -u -r490536070dbba464bd7a8e140609b1c853660007 -r1e6314ff2b8eb58d3630a7989e5aed022e13d35e
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/ReferenceLineReplacementHandlerTest.cs	(.../ReferenceLineReplacementHandlerTest.cs)	(revision 490536070dbba464bd7a8e140609b1c853660007)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/ReferenceLineReplacementHandlerTest.cs	(.../ReferenceLineReplacementHandlerTest.cs)	(revision 1e6314ff2b8eb58d3630a7989e5aed022e13d35e)
@@ -154,7 +154,7 @@
             IObservable[] observables = handler.Replace(assessmentSection, referenceLine).ToArray();
 
             // Assert
-            Assert.AreEqual(39, observables.Length);
+            Assert.AreEqual(42, observables.Length);
 
             PipingFailureMechanism pipingFailureMechanism = assessmentSection.PipingFailureMechanism;
             CollectionAssert.IsEmpty(pipingFailureMechanism.Sections);
@@ -245,6 +245,12 @@
             CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.Sections);
             CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.SectionResults);
             CollectionAssert.Contains(observables, macroStabilityInwardsFailureMechanism);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.CalculationsGroup.Children);
+            CollectionAssert.Contains(observables, macroStabilityInwardsFailureMechanism.CalculationsGroup);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.StochasticSoilModels);
+            CollectionAssert.Contains(observables, macroStabilityInwardsFailureMechanism.StochasticSoilModels);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.SurfaceLines);
+            CollectionAssert.Contains(observables, macroStabilityInwardsFailureMechanism.SurfaceLines);
 
             MacrostabilityOutwardsFailureMechanism macrostabilityOutwardsFailureMechanism = assessmentSection.MacrostabilityOutwards;
             CollectionAssert.IsEmpty(macrostabilityOutwardsFailureMechanism.Sections);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs
===================================================================
diff -u -rd6fe8399e8398224cf1bda9259052232d85b85a4 -r1e6314ff2b8eb58d3630a7989e5aed022e13d35e
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision d6fe8399e8398224cf1bda9259052232d85b85a4)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/RingtoetsDataSynchronizationServiceTest.cs	(.../RingtoetsDataSynchronizationServiceTest.cs)	(revision 1e6314ff2b8eb58d3630a7989e5aed022e13d35e)
@@ -559,6 +559,9 @@
             MacroStabilityInwardsFailureMechanism macroStabilityInwardsFailureMechanism = assessmentSection.MacroStabilityInwards;
             CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.Sections);
             CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.SectionResults);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.CalculationsGroup.Children);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.StochasticSoilModels);
+            CollectionAssert.IsEmpty(macroStabilityInwardsFailureMechanism.SurfaceLines);
 
             MacrostabilityOutwardsFailureMechanism macrostabilityOutwardsFailureMechanism = assessmentSection.MacrostabilityOutwards;
             CollectionAssert.IsEmpty(macrostabilityOutwardsFailureMechanism.Sections);
@@ -608,7 +611,7 @@
 
             // Assert
             IObservable[] changedObjects = results.ChangedObjects.ToArray();
-            Assert.AreEqual(39, changedObjects.Length);
+            Assert.AreEqual(42, changedObjects.Length);
 
             PipingFailureMechanism pipingFailureMechanism = assessmentSection.PipingFailureMechanism;
             CollectionAssert.Contains(changedObjects, pipingFailureMechanism);
@@ -659,6 +662,9 @@
 
             MacroStabilityInwardsFailureMechanism macroStabilityInwardsFailureMechanism = assessmentSection.MacroStabilityInwards;
             CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.CalculationsGroup);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.StochasticSoilModels);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.SurfaceLines);
 
             MacrostabilityOutwardsFailureMechanism macrostabilityOutwardsFailureMechanism = assessmentSection.MacrostabilityOutwards;
             CollectionAssert.Contains(changedObjects, macrostabilityOutwardsFailureMechanism);
@@ -705,7 +711,7 @@
 
             // Assert
             IObservable[] changedObjects = results.ChangedObjects.ToArray();
-            Assert.AreEqual(39, changedObjects.Length);
+            Assert.AreEqual(42, changedObjects.Length);
 
             PipingFailureMechanism pipingFailureMechanism = assessmentSection.PipingFailureMechanism;
             CollectionAssert.Contains(changedObjects, pipingFailureMechanism);
@@ -756,6 +762,9 @@
 
             MacroStabilityInwardsFailureMechanism macroStabilityInwardsFailureMechanism = assessmentSection.MacroStabilityInwards;
             CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.CalculationsGroup);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.StochasticSoilModels);
+            CollectionAssert.Contains(changedObjects, macroStabilityInwardsFailureMechanism.SurfaceLines);
 
             MacrostabilityOutwardsFailureMechanism macrostabilityOutwardsFailureMechanism = assessmentSection.MacrostabilityOutwards;
             CollectionAssert.Contains(changedObjects, macrostabilityOutwardsFailureMechanism);