Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs
===================================================================
diff -u -rae5c573fb82f4b30350f63cb6f202ae99275f4ff -rbc9af05d3eb0d40e5620b96f537ed92f3ae52e94
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision ae5c573fb82f4b30350f63cb6f202ae99275f4ff)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision bc9af05d3eb0d40e5620b96f537ed92f3ae52e94)
@@ -206,15 +206,17 @@
                                                                                                                  assessmentSection)).ToArray());
         }
 
-        private static void ValidateAll(IEnumerable<StructuresCalculation<HeightStructuresInput>> heightStructuresCalculations, IAssessmentSection assessmentSection)
+        private static void ValidateAll(IEnumerable<StructuresCalculation<HeightStructuresInput>> heightStructuresCalculations,
+                                        IAssessmentSection assessmentSection)
         {
             foreach (var calculation in heightStructuresCalculations)
             {
                 HeightStructuresCalculationService.Validate(calculation, assessmentSection);
             }
         }
 
-        private static string ValidateAllDataAvailableAndGetErrorMessage(IAssessmentSection assessmentSection, HeightStructuresFailureMechanism failureMechanism)
+        private static string ValidateAllDataAvailableAndGetErrorMessage(IAssessmentSection assessmentSection,
+                                                                         HeightStructuresFailureMechanism failureMechanism)
         {
             if (!failureMechanism.Sections.Any())
             {
@@ -245,7 +247,7 @@
             var assessmentSection = o as IAssessmentSection;
             var failureMechanism = o as HeightStructuresFailureMechanism;
 
-            var viewFailureMechanismContext = (HeightStructuresFailureMechanismContext)view.Data;
+            var viewFailureMechanismContext = (HeightStructuresFailureMechanismContext) view.Data;
             var viewFailureMechanism = viewFailureMechanismContext.WrappedData;
 
             return assessmentSection != null
@@ -316,18 +318,21 @@
 
         private void OnHeightStructureRemoved(HeightStructure nodeData, object parentData)
         {
-            var parentContext = (HeightStructuresContext)parentData;
+            var parentContext = (HeightStructuresContext) parentData;
             var changedObservables = new List<IObservable>();
-            StructuresCalculation<HeightStructuresInput>[] heightStructureCalculations = parentContext.ParentFailureMechanism.Calculations
-                                                                                                      .Cast<StructuresCalculation<HeightStructuresInput>>()
-                                                                                                      .ToArray();
+            StructuresCalculation<HeightStructuresInput>[] heightStructureCalculations = parentContext
+                .FailureMechanism.Calculations
+                .Cast<StructuresCalculation<HeightStructuresInput>>()
+                .ToArray();
             StructuresCalculation<HeightStructuresInput>[] calculationWithRemovedHeightStructure = heightStructureCalculations
                 .Where(c => ReferenceEquals(c.InputParameters.Structure, nodeData))
                 .ToArray();
             foreach (StructuresCalculation<HeightStructuresInput> calculation in calculationWithRemovedHeightStructure)
             {
                 calculation.InputParameters.Structure = null;
-                StructuresHelper.Delete(parentContext.ParentFailureMechanism.SectionResults, calculation, heightStructureCalculations);
+                StructuresHelper.Delete(parentContext.FailureMechanism.SectionResults,
+                                        calculation,
+                                        heightStructureCalculations);
                 changedObservables.Add(calculation.InputParameters);
             }