I appreciate you for providing us with detailed information. I'm here to provide some ways to get around with your concern, wegerm.

All sales transactions will reflect on the Sales dashboard. This means, regardless of what type of account you've chosen, it'll add up on the Sales dashboard.

To give you the best solution to your question, this way, we can avoid double entry. You can delete the Sales receipt and match the payment deposit to invoice .you made to correct it.

To delete sales receipt, you can follow the steps below on how to do this:

1. Select Sales in the left-hand menu
2. Go to the All Sales tab,
3. Click on the Sales Receipt you wish to delete
4. At the bottom of the page click on More and select Delete
5. Select Yes to confirm

Here's how to match the payment deposit to an invoice 

1. Go to the Transaction menu, and then Banking.
2. In the For Review tab, select the payment.
3. Choose Find Match or Find other matches.
4. Locate and select the open invoice.
5. Press Save once done.

In addition, you'll want to categorize and match online bank transactions with what you've entered in QuickBooks Online.

Feel free to post a reply if you have additional details on your question above. I'll be around to help you out. Have a pleasant day!