WorkflowTool.py: deploy addPossibleTransition in workflow conversion.

product/ERP5/Tool/WorkflowTool.py

@@ -349,11 +349,7 @@ class WorkflowTool(BaseTool, OriginalWorkflowTool):
           sdef = workflow._getOb('state_'+sid)
           new_category = []
           for transition_id in dc_workflow.states.get(sid).transitions:
-            tr = getattr(workflow, 'transition_'+transition_id, None)
-            if tr is not None:
-              tr_path = 'destination/' + '/'.join(tr.getPath().split('/')[2:])
-              new_category.append(tr_path)
-          sdef.setCategoryList(new_category)
+            sdef.addPossibleTransition(transition_id)
         # set transition's destination state:
         for tid in dc_workflow.transitions:
           tdef = workflow._getOb('transition_'+tid)