Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsCalculationGroupContext.cs
===================================================================
diff -u -r78382ec129ddc7537096860680cef36f3796700d -r7691617baab138d49ebe8a6348f9897582027d6b
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsCalculationGroupContext.cs	(.../MacroStabilityInwardsCalculationGroupContext.cs)	(revision 78382ec129ddc7537096860680cef36f3796700d)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PresentationObjects/MacroStabilityInwardsCalculationGroupContext.cs	(.../MacroStabilityInwardsCalculationGroupContext.cs)	(revision 7691617baab138d49ebe8a6348f9897582027d6b)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using Core.Common.Controls.PresentationObjects;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Forms.PresentationObjects;
@@ -59,5 +60,22 @@
         }
 
         public CalculationGroup Parent { get; }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as MacroStabilityInwardsCalculationGroupContext);
+        }
+
+        public override bool Equals(WrappedObjectContextBase<CalculationGroup> other)
+        {
+            return base.Equals(other)
+                   && other is MacroStabilityInwardsCalculationGroupContext
+                   && ReferenceEquals(Parent, ((MacroStabilityInwardsCalculationGroupContext) other).Parent);
+        }
+
+        public override int GetHashCode()
+        {
+            return base.GetHashCode() ^ Parent.GetHashCode();
+        }
     }
 }
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