I'm changing the way I record payments to a Supplier Invoice so I'm deleting all of my Supplier Payments.  There are a handful that I'm prevented from unreconciling due to the following error:

"The following fields are invalid: Debits"

This seems to be due to an erroneous line in the Debits section of the affected Supplier Payments.  How can I edit or delete that erroneous line so I can unreconcile the payment so I can delete it?