I've tested the import of the Ship to from the OE per your instructions however I have two issues:
1-it's assigning a ship to code equal to the customer code. But the customer code is really tagged to the Bill to. Every Ship to address in the Work order for this customer is different as we are shipping on their behalf to third parties. With the Ship to in POs all I can do is update the same Ship to code which doesn't work.
2-the Ship to name imported is the Customer name, not the Ship to Name.

Andrew, as for your comments on the import function, I fully understand the complexity of the different scenarios, but just having the ability to import through File/Import would be helpful as I could create a Gridview or Crystal report to then upload daily in POs.

thank you everyone for your help and suggestions,
Vickie.