Index: Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs
===================================================================
diff -u -ra6ddf1dcb7c6ca6e8e983467733c25134f673120 -r12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c
--- Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs	(.../PipingDataSynchronizationService.cs)	(revision a6ddf1dcb7c6ca6e8e983467733c25134f673120)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs	(.../PipingDataSynchronizationService.cs)	(revision 12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c)
@@ -130,7 +130,6 @@
 
             var changedObjects = new Collection<IObservable>();
             object[] removedObjects = failureMechanism.Sections.OfType<object>()
-                                                      .Concat(failureMechanism.SectionResultsOld)
                                                       .Concat(failureMechanism.SectionResults)
                                                       .Concat(failureMechanism.ScenarioConfigurationsPerFailureMechanismSection)
                                                       .Concat(failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
@@ -140,7 +139,6 @@
 
             failureMechanism.ClearAllSections();
             changedObjects.Add(failureMechanism);
-            changedObjects.Add(failureMechanism.SectionResultsOld);
             changedObjects.Add(failureMechanism.SectionResults);
             changedObjects.Add(failureMechanism.ScenarioConfigurationsPerFailureMechanismSection);
 
Index: Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingDataSynchronizationServiceTest.cs
===================================================================
diff -u -ra6ddf1dcb7c6ca6e8e983467733c25134f673120 -r12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c
--- Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingDataSynchronizationServiceTest.cs	(.../PipingDataSynchronizationServiceTest.cs)	(revision a6ddf1dcb7c6ca6e8e983467733c25134f673120)
+++ Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingDataSynchronizationServiceTest.cs	(.../PipingDataSynchronizationServiceTest.cs)	(revision 12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c)
@@ -209,7 +209,6 @@
             PipingFailureMechanism failureMechanism = PipingTestDataGenerator.GetPipingFailureMechanismWithAllCalculationConfigurations();
 
             object[] expectedRemovedObjects = failureMechanism.Sections.OfType<object>()
-                                                              .Concat(failureMechanism.SectionResultsOld)
                                                               .Concat(failureMechanism.SectionResults)
                                                               .Concat(failureMechanism.ScenarioConfigurationsPerFailureMechanismSection)
                                                               .Concat(failureMechanism.CalculationsGroup.GetAllChildrenRecursive())
@@ -224,17 +223,15 @@
             // 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.ScenarioConfigurationsPerFailureMechanismSection);
             CollectionAssert.IsEmpty(failureMechanism.CalculationsGroup.Children);
             CollectionAssert.IsEmpty(failureMechanism.StochasticSoilModels);
             CollectionAssert.IsEmpty(failureMechanism.SurfaceLines);
 
             IObservable[] array = results.ChangedObjects.ToArray();
-            Assert.AreEqual(7, array.Length);
+            Assert.AreEqual(6, array.Length);
             CollectionAssert.Contains(array, failureMechanism);
-            CollectionAssert.Contains(array, failureMechanism.SectionResultsOld);
             CollectionAssert.Contains(array, failureMechanism.SectionResults);
             CollectionAssert.Contains(array, failureMechanism.ScenarioConfigurationsPerFailureMechanismSection);
             CollectionAssert.Contains(array, failureMechanism.CalculationsGroup);