Index: Riskeer/HeightStructures/src/Riskeer.HeightStructures.Service/HeightStructuresDataSynchronizationService.cs
===================================================================
diff -u -r4d69c4f4cd06f391026d5dc4f385dd3fba7703fc -r63df093fdcd2337b4426db6b6417bb59afe9186e
--- Riskeer/HeightStructures/src/Riskeer.HeightStructures.Service/HeightStructuresDataSynchronizationService.cs	(.../HeightStructuresDataSynchronizationService.cs)	(revision 4d69c4f4cd06f391026d5dc4f385dd3fba7703fc)
+++ Riskeer/HeightStructures/src/Riskeer.HeightStructures.Service/HeightStructuresDataSynchronizationService.cs	(.../HeightStructuresDataSynchronizationService.cs)	(revision 63df093fdcd2337b4426db6b6417bb59afe9186e)
@@ -167,7 +167,6 @@
 
             var changedObjects = new List<IObservable>();
             object[] removedObjects = failureMechanism.Sections.OfType<object>()
-                                                      .Concat(failureMechanism.SectionResultsOld)
                                                       .Concat(failureMechanism.SectionResults)
                                                       .Concat(failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
                                                       .Concat(failureMechanism.ForeshoreProfiles)
@@ -176,7 +175,6 @@
 
             failureMechanism.ClearAllSections();
             changedObjects.Add(failureMechanism);
-            changedObjects.Add(failureMechanism.SectionResultsOld);
             changedObjects.Add(failureMechanism.SectionResults);
 
             failureMechanism.CalculationsGroup.Children.Clear();
Index: Riskeer/HeightStructures/test/Riskeer.HeightStructures.Service.Test/HeightStructuresDataSynchronizationServiceTest.cs
===================================================================
diff -u -r4d69c4f4cd06f391026d5dc4f385dd3fba7703fc -r63df093fdcd2337b4426db6b6417bb59afe9186e
--- Riskeer/HeightStructures/test/Riskeer.HeightStructures.Service.Test/HeightStructuresDataSynchronizationServiceTest.cs	(.../HeightStructuresDataSynchronizationServiceTest.cs)	(revision 4d69c4f4cd06f391026d5dc4f385dd3fba7703fc)
+++ Riskeer/HeightStructures/test/Riskeer.HeightStructures.Service.Test/HeightStructuresDataSynchronizationServiceTest.cs	(.../HeightStructuresDataSynchronizationServiceTest.cs)	(revision 63df093fdcd2337b4426db6b6417bb59afe9186e)
@@ -462,7 +462,6 @@
             HeightStructuresFailureMechanism failureMechanism = CreateFullyConfiguredFailureMechanism();
 
             object[] expectedRemovedObjects = failureMechanism.Sections.OfType<object>()
-                                                              .Concat(failureMechanism.SectionResultsOld)
                                                               .Concat(failureMechanism.SectionResults)
                                                               .Concat(failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
                                                               .Concat(failureMechanism.ForeshoreProfiles)
@@ -476,16 +475,14 @@
             // 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(failureMechanism.Sections);
-            CollectionAssert.IsEmpty(failureMechanism.SectionResultsOld);
             CollectionAssert.IsEmpty(failureMechanism.SectionResults);
             CollectionAssert.IsEmpty(failureMechanism.CalculationsGroup.Children);
             CollectionAssert.IsEmpty(failureMechanism.ForeshoreProfiles);
             CollectionAssert.IsEmpty(failureMechanism.HeightStructures);
 
             IObservable[] array = results.ChangedObjects.ToArray();
-            Assert.AreEqual(6, array.Length);
+            Assert.AreEqual(5, array.Length);
             CollectionAssert.Contains(array, failureMechanism);
-            CollectionAssert.Contains(array, failureMechanism.SectionResultsOld);
             CollectionAssert.Contains(array, failureMechanism.SectionResults);
             CollectionAssert.Contains(array, failureMechanism.CalculationsGroup);
             CollectionAssert.Contains(array, failureMechanism.ForeshoreProfiles);