JDE voucher credit line due date default to gl date instead of the vendor's payment term date

in JDE 9.1 what controls the due date for a voucher credit line?  We have an issue where a progress payment entry has credit line and the due date defaults to the gl date, not the due date per vendor payment terms.  This is causing the check/wire for the progress payment to be incorrect as the system applies the credit line to the next payment made based on that due date.