Thank you for providing me with so much detail, info66.
I love to help you match a single deposit to multiple invoices.
When QuickBooks Online is unable to match transactions, you can search the it to find the correct one. To do this, just click the Find match button.
Here's how:
- Choose Banking on the left pane.
- On the Banking screen, click the For Review tab.
- Click the deposit and tick the radio button for Find match.
- Select the payment transactions and click Save.
To provide a visual point of reference, I’ve included screenshots below.
That should get you on the right track. I'd like to make sure that you're able to resolve this concern, so please let me know how it goes by posting a comment below. Best regards.