Voucher Inquiry Page - Voucher Unpaid Balance incorrect when Voucher paid in full

We are in FSCM 9.1 and we are getting this issue in Voucher Inquiry page.
Even though the Voucher has been paid in full, when the Voucher is displayed through Voucher Inquiry, Voucher Unpaid Balance still has the same amount as the Gross Invoice Amount.  It should be 0.00.  However, the Gross Amount Paid and Net Amount Paid fields are populated correctly.  They have the same amount as the Gross Invoice Amount field.

STEPS
1.  Create a Voucher
2.  Pay the Voucher manually
3.  Display the Voucher through Voucher Inquiry
4.  Under Voucher Inquiry Results, access the Amounts tab
5.  Voucher Unpaid Balance is equal to the Gross Invoice Amount field.  Voucher Unpaid Balance should display 0.00.