We have a multi-domain enviroment for our European business entities.  French orders start in the French domain, but are EMT

orders that are DIR-SHIPed from another (iventory warehouse) domain, confirmed via EDI. 

The IC trsnsactions (GL and Intrastat) are handled within the EMT process.  The French domain buys the inventory from the warehouse domain.

If a French customer needs to return an order, I need the French customer to be credited, I need the material returned to the inventory warehouse domain, and

I need the warehouse domain to buy-back the inventory from the French domain.

Any ideas how I can do this within EMT / EDI?