I received a payment from Customer A via Zelle. I went to Invoicing to Record Payment for that customer's invoice. I completed the transaction and realized I had posted it to Customer B's open invoice, which was for the same amount. To correct it, I "refunded" the incorrect payment and applied it to the correct invoice. Now Customer A's invoice shows being PAID and Customer B's shows REFUNDED.
1) Was that the correct way to resolve an improperly applied payment? If not, what is?
2) Will Customer B now still be able to pay their "refunded" invoice? Or
3) Are further transactions against that invoice possible? The "Record payment" option no longer appears in the invoice menu
4) Will I need to create a new invoice for Customer B?