When Automatic Application rules are set in place to apply to oldest charge and there is a charge that was partially paid based on this rule, when the payment is then unapplied from that partially paid charge it can cause the original amount that had been applied to credit the Unapplied Payments account.
To correct this issue:
1. Open payment>Student Billing Detail tab. 2. Click Remove All Applications. 3. Click Add/Edit Applications, apply the payment to the correct charges. 4. Click Save and Close. 5. Check General Ledger tab and see that the Unapplied Payment account is no longer listed for the partially paid charge.