Thanks for reaching out to the Community, @epad03.

Once you've entered the Invoice, then you can create a Receive Payment and place it in the Undeposited Funds account until the Deposit comes through your bank in the Online Bank Feed in QuickBooks Online. When you see the transaction in the For Review section in your Banking tab, then you can match the Deposit to the Invoice to clear the payment and zero out the Undeposited Funds account. Matching will prevent any duplications of transactions and help organize your books. If you don't have your bank connected, then you can create a Bank Deposit.

After the Invoicing process and it's the end of the month, then you'll need to reconcile your accounts in QuickBooks Online. This is to ensure that your bank or credit card statement matches what is recorded in QuickBooks. No worries, here's a Community Article that goes into detail and explains how reconciling works: Reconcile an account in QuickBooks Online.

If you need further assistance, please feel free and leave me a Reply. I've got your back. Have a nice day!