I have a customer with several ship to addresses and one bill to address.  Each ship to address has a different part number for the same part.  The customer wants each ship to location part number listed on packing slips and invoices specific to that location.  I know you can add customer part numbers under IN-L-C (Classic user) under the bill to customer name and it will pull into the packing slips and invoices.  Is there any way to make it pull into the packing slips and invoices when I put it under the ship to address locations?

Or give the billing customer multiple account numbers, all with the same billing address. We have done this with service contracts.