Q: What does the "Reversal Amount" correlate to on the Former Owner/Charge Credit tab?
A: During the ownership change process, there is an option to Reverse the charge. If an amount is entered in the Reversal Amount box, the system will create only an account credit for the former owner instead of moving the charge to the new owner. This credit will use the default credit transaction type. To ensure this works correctly, one of the credit transaction types should be marked as Use as Default on the Firm Trans Type page.
Just a note: Based on the screenshot you provided, two different transaction types (with different GL accounts) were used for the original charges. Ideally, the account credit should debit the same Revenue GL account as the original charge credited. If the credit uses a different GL account, we recommend adjusting it with a journal entry to keep the accounts accurate.