Index: src/Deltares.DSoilModel.Forms/DSoilModelContext.cs
===================================================================
diff -u -r721 -r741
--- src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 721)
+++ src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 741)
@@ -161,6 +161,19 @@
                 return false;
             }
 
+            var cpt = source as ConePenetrationTestData;
+            if (cpt != null)
+            {
+                if (member == cpt.GetMemberName(c => c.Top) ||
+                    member == cpt.GetMemberName(c => c.InterpretationModel) ||
+                    member == cpt.GetMemberName(c => c.IsInterpretationModelStressDependent) ||
+                    member == cpt.GetMemberName(c => c.TimeOrderType) ||
+                    member == cpt.GetMemberName(c => c.IsQceEquivalentWanted))
+                {
+                    return false;
+                }
+            }
+
             var boring = source as Boring;
             if (boring != null)
             {
@@ -493,6 +506,11 @@
                 return "F3";
             }
 
+            if (type == typeof(ConePenetrationTestData) || source is ConePenetrationTestData)
+            {
+                return "F3";
+            }
+
             return base.GetFormat(type, source, member);
         }