Hi there, ckennedy!
Welcome to the Community.
You'll be able to apply the credit card payment made by your client on one invoice by creating a Bank Deposit transaction. This would allow you to split the amount of the payment so you could apply it to the other invoice.
Let me show you how:
- Go to the Plus icon.
- Under Other, select Bank Deposit.
- On the first row under RECEIVED FROM column, select the first project and the second project on the second row.
- Under ACCOUNT, choose Accounts Receivable on both rows.
- On the AMOUNT, it should be the amount of the second invoice but negative for the first row while positive on the second.
- Click on Save and close.
You'll then receive the payment on the second invoice by applying the deposit as a credit.
Here's how:
- On the invoice of the second project, click Make payment.
- Under Credits, select the checkbox for deposit.
- Click on Save and close.
You can check and verify on the project's invoice.
I've also attached a screenshot for your reference.
Here's an article to learn more about this: Record a Bank Transfer.
Please know that will always be here in the Community to assist your future concerns.