Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs
===================================================================
diff -u -rb7e9a2c0ff0bb20209a80f5d96ffda1921ec724c -r927a3e30dcd41d99bda5f1b5a4f15790c3821037
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs	(.../StabilityStoneCoverPlugin.cs)	(revision b7e9a2c0ff0bb20209a80f5d96ffda1921ec724c)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs	(.../StabilityStoneCoverPlugin.cs)	(revision 927a3e30dcd41d99bda5f1b5a4f15790c3821037)
@@ -371,8 +371,13 @@
                    .AddExportItem()
                    .AddSeparator();
 
-            if (!isNestedGroup)
+            if (isNestedGroup)
             {
+                builder.AddDuplicateCalculationItem(group, nodeData)
+                       .AddSeparator();
+            }
+            else
+            {
                 builder.AddCustomItem(CreateGenerateWaveConditionsCalculationsItem(nodeData))
                        .AddSeparator();
             }