Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/ObjectCopier.cs
===================================================================
diff -u -r6404 -r7077
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/ObjectCopier.cs	(.../ObjectCopier.cs)	(revision 6404)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/ObjectCopier.cs	(.../ObjectCopier.cs)	(revision 7077)
@@ -1,4 +1,4 @@
-// Copyright (C) Stichting Deltares 2025. All rights reserved.
+// Copyright (C) Stichting Deltares 2026. All rights reserved.
 // 
 // This file is part of the Dam Engine.
 // 
@@ -104,7 +104,7 @@
         }
 
         Type typeToReflect = originalObject.GetType();
-        if (IsPrimitive(typeToReflect))
+        if (typeToReflect.IsPrimitive())
         {
             return originalObject;
         }
@@ -123,7 +123,7 @@
         if (typeToReflect.IsArray)
         {
             Type arrayType = typeToReflect.GetElementType();
-            if (!IsPrimitive(arrayType))
+            if (!arrayType.IsPrimitive())
             {
                 var clonedArray = (Array) cloneObject;
                 clonedArray.ForEach((array, indices) => array.SetValue(InternalCopy(clonedArray.GetValue(indices), visited), indices));
@@ -154,7 +154,7 @@
                 continue;
             }
 
-            if (IsPrimitive(fieldInfo.FieldType))
+            if (fieldInfo.FieldType.IsPrimitive())
             {
                 continue;
             }