Adding Sales Receipt to Invoice

I am using quickbooks credit card payments. I received a CC payment via the swipe reader and it imported in QBO as a Sales Receipt. This was a partial payment for the total amount owed. So I created an invoice but have no idea how to link the sales receipt and the invoice. I tried manually entering the CC payment in the invoice but all that did was duplicate payments. I also tried deleting the sales receipt but the system would not let me. Was on the phone an hour with support and no luck.