Code for renaming EPMDoc Number and Filename

I'm using the code shown in PTC CS150421 to rename (number and filename) for CADDocs.

EPMDocumentMasterIdentity masterIdentity = (EPMDocumentMasterIdentity)master.getIdentificationObject(); 

masterIdentity.setNumber(number);

IdentityHelper.service.changeIdentity((Identified) master, masterIdentity);

master = (EPMDocumentMaster) PersistenceHelper.manager.refresh(master);

WTKeyedMap docCadNameMap = new WTKeyedHashMap(1);

docCadNameMap.put(master, cadname);

EPMDocumentHelper.service.changeCADName(docCadNameMap);

The problem I'm having is when opening in Pro/E, I get file cannot be retrieved. I see downloaded successful and see it in the workspace. The number and filename all show the new name in the PDMLink UI. Even the filename on the content tab updates.