Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs
===================================================================
diff -u -r59d8943b166f40b1d8b3595b43b2a524e719b2ef -rc82e195aaa6fea71270f7d98520ff314f3432d0e
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs	(.../StabilityPointStructuresPlugin.cs)	(revision 59d8943b166f40b1d8b3595b43b2a524e719b2ef)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs	(.../StabilityPointStructuresPlugin.cs)	(revision c82e195aaa6fea71270f7d98520ff314f3432d0e)
@@ -565,15 +565,15 @@
                 if (dialog.SelectedItems.Any())
                 {
                     GenerateStabilityPointStructuresCalculations(
-                        nodeData.FailureMechanism.SectionResults,
+                        nodeData.FailureMechanism,
                         dialog.SelectedItems.Cast<StabilityPointStructure>(),
                         nodeData.WrappedData.Children);
                     nodeData.NotifyObservers();
                 }
             }
         }
 
-        private static void GenerateStabilityPointStructuresCalculations(IEnumerable<StabilityPointStructuresFailureMechanismSectionResult> sectionResults, IEnumerable<StabilityPointStructure> structures, IList<ICalculationBase> calculations)
+        private static void GenerateStabilityPointStructuresCalculations(StabilityPointStructuresFailureMechanism failureMechanism, IEnumerable<StabilityPointStructure> structures, IList<ICalculationBase> calculations)
         {
             foreach (StabilityPointStructure structure in structures)
             {
@@ -588,8 +588,8 @@
                 calculations.Add(calculation);
             }
             StructuresHelper.UpdateCalculationToSectionResultAssignments(
-                sectionResults,
-                calculations.Cast<StructuresCalculation<StabilityPointStructuresInput>>());
+                failureMechanism.SectionResults,
+                failureMechanism.Calculations.Cast<StructuresCalculation<StabilityPointStructuresInput>>());
         }
 
         private static void CalculationGroupContextOnNodeRemoved(StabilityPointStructuresCalculationGroupContext context, object parentNodeData)