Index: Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs
===================================================================
diff -u -r898d42ca6354285169751f4de231f96f40b1f6f9 -r07f3d67fe9512b3c8303ff09398b0a234900d546
--- Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs	(.../StructuresInputBase.cs)	(revision 898d42ca6354285169751f4de231f96f40b1f6f9)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs	(.../StructuresInputBase.cs)	(revision 07f3d67fe9512b3c8303ff09398b0a234900d546)
@@ -36,7 +36,7 @@
     /// Base class that holds generic structures calculation input parameters.
     /// </summary>
     /// <typeparam name="T">The type of structure contained by the input.</typeparam>
-    public abstract class StructuresInputBase<T> : Observable, IStructuresCalculationInput<T>, IUseBreakWater, IUseForeshore, IHasForeshoreProfile
+    public abstract class StructuresInputBase<T> : CloneableObservable, IStructuresCalculationInput<T>, IUseBreakWater, IUseForeshore, IHasForeshoreProfile
         where T : StructureBase
     {
         private const int structureNormalOrientationNumberOfDecimals = 2;
@@ -149,9 +149,9 @@
         /// <remarks>When no structure is present, the input parameters are set to default values.</remarks>
         public abstract void SynchronizeStructureInput();
 
-        public virtual object Clone()
+        public override object Clone()
         {
-            var clone = (StructuresInputBase<T>) MemberwiseClone();
+            var clone = (StructuresInputBase<T>) base.Clone();
 
             clone.modelFactorSuperCriticalFlow = (NormalDistribution) ModelFactorSuperCriticalFlow.Clone();
             clone.allowedLevelIncreaseStorage = (LogNormalDistribution) AllowedLevelIncreaseStorage.Clone();