Problem
The customer's statement shows that they have paid twice, and you need to correct it and reflect that the check bounced back and a credit card payment was applied to the original invoice.
Solution
Go to the adjustment invoice and delete the task to create a negative balance.
Add a negative payment to the adjustment invoice with the same amount.
The reporting and printout of the invoice will now show the correct data.
The negative payment still appears, but it is not an issue since it is showing as negative since the check was bounced. This will not make changes to the overall balance of the invoice.