This is an Ecore & EMF serialization question. First create your DFD model
then go back to Ecore and map both UML XMI and your EMF serialization
which has generated your DFD model. No an easy job but it could be done.
btw, if you don't have time to start a 12 months project you can ask
Omondo to do the job for you. You will get a UML 2.2 live synchronization
with your DFD model. This is not an easy job but if the size of the deal
is good we could be interested to help you. Please send an email to "sales
at omondo.com" for a quotation if you are interested in such an offer.
Thanks,