Hi there, DawnK,
The default invoice template in QuickBooks Online (QBO) doesn't have a "Deposit" box.
The box may have been added as a custom field in the form. This will not affect any of your records, such as reports and bank accounts. It only tracks the information that matters most to you and your customers. See the screenshots attached below for your visual guide.
When you record the customer payment, the bank from the Deposit to field is where the funds go.
You need to open the account where it was deposited to. That's the one you'll pull up on your register.
I've added these articles for additional information about custom fields and recording payments:
Let me know if you have follow-up questions, and I'm always around to help you out.