Hey there, @mforest. Happy to help out here.

When you receive payment on an invoice in QuickBooks Online, it will go to Undeposited Funds until you create a Bank Deposit from it. If you're not seeing the deposit for the payment in your Bank Register, that indicates that the Bank Deposit for the payment wasn't created. Here's how to deposit a payment:

https://youtu.be/_pCMtmY3pao

Due to the length of the required steps, I'll just link you to this awesome resource: Record and make Bank Deposits in QuickBooks Online

Once you've recorded the deposit, you should see it in your bank register.

Let me know if you have any other questions, I'll be here to help. Have a good one!