E1 43 Why is VMA using the Voucher GL Company to Look for PO Receipt Lines to Match?

We are using Match Method 02, with Order level and Item Level matching active (PO Doc Company and Item Number fields are populated on the EDI Batch Record. We discovered VMA is using the GL Company (alias CO) on the EDI Batch Voucher Pay Item to look for PO Receipt/PO Detail Lines to match against. If the company number in this field does not match the Doc Company on the PO Receipt Line, the VMA report shows this as a 'No Match' exception. If I do a SQL fix on the EDI Batch Voucher record and