Issue
When an invoice is coded against an SM Work Order, the correct GL Account could change once a Work Order is closed. If the invoice is still in the APFlow workflow, the GL Account originally pulled at the time of entry may not match the current GL Account for the SM Work Order at the time the invoice is approved and/or exported.
Resolution
Vista has settings in their Import Template Detail which allows a column to be set to Override Import Value. When used in conjunction with Use Viewpoint Default, the import will ignore the value of the GL Account column and retrieve the correct GL Account for that point in time during the import.