Allow me to chime in, Nick352.
Yes, it won't mess up the bank reconciliation. Editing a line on the deposit screen won't affect or change its reconciliation status as long as it has the same amount and account.
Go ahead and proceed with BigRedConsulting's instructions to link the sales receipt to the appropriate customer.
For future reference, I've added this article about resolving problems with account reconciliation: Fix issues when you're reconciling in QuickBooks Desktop.
If you have further questions, let us know. We're available to help you at any time.
