Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Create/CalculationGroupCreateExtensions.cs
===================================================================
diff -u -rd3eaf9dfba5fcc97f9a4b2e901e37ea83387bac2 -r811967790aed0c6617f36c2135016a5bc4aa8fcc
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Create/CalculationGroupCreateExtensions.cs	(.../CalculationGroupCreateExtensions.cs)	(revision d3eaf9dfba5fcc97f9a4b2e901e37ea83387bac2)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Create/CalculationGroupCreateExtensions.cs	(.../CalculationGroupCreateExtensions.cs)	(revision 811967790aed0c6617f36c2135016a5bc4aa8fcc)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Application.Ringtoets.Storage.Create.ClosingStructures;
 using Application.Ringtoets.Storage.Create.GrassCoverErosionInwards;
 using Application.Ringtoets.Storage.Create.GrassCoverErosionOutwards;
 using Application.Ringtoets.Storage.Create.HeightStructures;
@@ -28,6 +29,7 @@
 using Application.Ringtoets.Storage.Create.WaveImpactAsphaltCover;
 using Application.Ringtoets.Storage.DbContext;
 using Core.Common.Utils.Extensions;
+using Ringtoets.ClosingStructures.Data;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.Structures;
 using Ringtoets.GrassCoverErosionInwards.Data;
@@ -100,6 +102,11 @@
                 {
                     entity.HeightStructuresCalculationEntities.Add(childHeightStructuresCalculation.Create(registry, i));
                 }
+                var childClosingStructuresCalculation = calculationBase as StructuresCalculation<ClosingStructuresInput>;
+                if (childClosingStructuresCalculation != null)
+                {
+                    entity.ClosingStructuresCalculationEntities.Add(childClosingStructuresCalculation.Create(registry, i));
+                }
                 var stabilityStoneCoverWaveConditionsCalculation = calculationBase as StabilityStoneCoverWaveConditionsCalculation;
                 if (stabilityStoneCoverWaveConditionsCalculation != null)
                 {