Multi-company processing - Steps for doing a drop ship?

I think I have multi-company processing set up to transfer documents between Company A and Company B for normal inter-company processing if the shipment is going from Company B to Company A - to a specific location.

My problem is...
I want to place a customer order in Company A, Company A will place a PO with Company B. Company B will ship the order directly to the customer, and invoice Company A. Company A will then (receive the drop ship PO and invoice the customer.

Here's what I'm doing.
Enter Customer Order in Company A.

Enter PO within Company A to Company B. - with the end customer's shipto address.

When I pull this PO into Company B - into a sales order via order entry/incoming linked PO suggestions, it does not Pull in the End customer's address(Address of the PO) it pulls in the shipto address for Company B's SOLDTO.

Is anyone else doing this? and if so, what are the data entry steps to get the customer's shipto address off the PO printed on the Sales order?