I've got your back, @Hawkeye14.
After you void the refund by creating a General Journal Entry (GJE), it will still be recorded as an overpayment refund on your customer's account. The refund won't be deleted; it will only be offset.
Also, the name of the clearing account that it's being held in depends on how you'll name it upon setting it up. Additionally, you can access all accounts when creating a GJE.
Moreover, the way to cancel the refund amount without canceling the refund check for the overpayment is by creating a GJE. For more guidance on the offsetting process, you can consult your accountant.
Just in case you want to display a more detailed breakdown of amounts and accounts that are not visible from the transaction, you can check out this article for guidance: View the Transaction Journal report in QuickBooks Desktop.
You can always get back to this thread if you have any follow-up concerns regarding creating a GJE for your customer. We'd be glad to help. Stay safe!
