Hey there, saM1980.
Thanks for taking the time out of your day to post here in the QuickBooks Community, I'm happy to help. What we can do is delete the customer payment, then re-apply that to specific Invoices. To do that just click on:
- Customers and click on the specific customer.
- Here you will see all the Payments and you can click on Payment, and down at the bottom of the Payment is More, then click on Delete.
- Now you can click on Create+ and Receive Payment
- Then enter your Customer's name, enter the Bank where it is being Deposited, Enter the Check Details and Amount and check off all Invoices you want the Payment to apply.
I also have this helpful article for you to check out at your convenience: Common issues when applying a payment. If there's anything else I can do to help, feel free to post here anytime. Thanks for stopping by and I hope you have a wonderful afternoon.