Inbound 850 with SDQ to processSalesOrder bssv

I have a client that wants us to modify our process from using the SDQ as just a ship to location to using as a mark-for location or ship to based on the EDI guidelines. Our current process we do not utilize the 47013 table. We create a new DOCO (47011,47012) for each SDQ ship to location and process to the 42 tables with the processSalesOrder bssv. Ultimately this results in an invoice for each DOCO.   The client is looking for 1 Invoice based on the Purchase Order when the SDQ is used for mark-for but multiple invoices when the SDQ is used for ship to locations.