DataUtility doesn't work on Windchill 11.1

Hi All,

I'm upgrading from Windchill 9 to 11.1 and I have a JCA / DataUtility customizion I want to convert using OOTB DataUtility ID inside Type and Attribute Manager, but it doesn't work.

The customization consists in some soft attribute (eg:  DocumentCategory_ETS)  of a soft type (intra.elica.upgradesvil.ETS  subtype of ReferenceDocument  subtype of WTDocument)  to be rendered as ComboBox.

I followed all instructions and tips from Windchill help center and support cases.

Following my code and configurations:

1)  site.xconf

<Property name="wt.services/svc/default/com.ptc.core.components.descriptor.DataUtility/ETSDataUtility/java.lang.Object/0"
overridable="true"
targetFile="codebase/service.properties"
value="ext.elica.doc.datautility.ETSDataUtility/duplicate"/>

2)  propagated value inside components.dataUtilities.properties

wt.services/svc/default/com.ptc.core.components.descriptor.DataUtility/ETSDataUtility/java.lang.Object/0=ext.elica.doc.datautility.ETSDataUtility/duplicate

3)  java class portion

package ext.elica.doc.datautility;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;

import wt.iba.value.IBAHolder;
import wt.method.RemoteAccess;
import wt.util.WTException;
import wt.util.WTRuntimeException;

import com.ptc.core.components.descriptor.ModelContext;
import com.ptc.core.components.factory.AbstractDataUtility;
import com.ptc.core.components.factory.dataUtilities.DefaultDataUtility;
import com.ptc.core.components.rendering.guicomponents.ComboBox;
import com.ptc.core.meta.common.AttributeIdentifier;
import com.ptc.core.meta.type.common.impl.DefaultTypeInstance;

import ext.elica.utils.ElicaUtils;

public class ETSDataUtility extends AbstractDataUtility implements RemoteAccess{

...

   public Object getDataValue(String componentName, Object obj, ModelContext modelcontext) throws     WTException {
   ComboBox comboBox = new ComboBox();
   comboBox.setRequired(true);

   ...

   return comboBox;
   }

}

4)  image of type and attribute manager

5)  image of  create doc wizard

6)  image of Available attributes

Additional notes:

a) I have put a breakpoint to debug my datautility class, but it doesn't break

b) i used Available Attributes report (Client customization - Tools), but I cant see my custom attributes   (there are currently 30 objects, same as OOTB WTDocument)

c) i created all IBAs and linked only to my soft type

d) I have specified the dataUtility ID in 3 layouts:  Default, Create, Edit

Thanks and let me know if further info needs