RMA has wrong Tax Region

When we run RMA Processing, the sales tax is incorrect if we have more than one Tax Region on a customer and we do not select the default. Once the RMA is selected, I believe it grabs the default tax region even though the sales order and invoice are using a different tax. It will not let us change it. We can change the rates but not the region.

Does anyone know how to get around this? We are on version 8.03.404A.

Kay Doolin
Indaco Metals LLC