Invoice match to non-existing payment

Thanks for dropping by the Community, @LindsayBW.

I'd gladly help you unmatch an invoice to payment in QuickBooks Online.

If the invoice is manually recorded, you'll want to go over the invoice page and unlink the payment. I'll show you how to do it:

1. Go to the Sales menu and select Invoices.
2. From there, choose the invoice you want to unmatch the payment with.
3. Click the invoice and tap View Payment.
   
    
4. Untick the box beside the invoice payment.
5. Once done, tick Save and Close.
   
   

However, if it's the bank payment, you want to unmatch it from the invoice. Here's how:

1. Go to the Banking menu and click Banking.
2. Select the Categorized tab.
3. Find the transaction you wish to unmatch.
4. Tap Undo.
   

Here's a reference to help you account for your customer payments: Receive invoice payment.

In addition, if you want to keep your accounts matched to your bank and credit card statements, here's an article you can refer to for more details: Reconcile an account in QuickBooks Online.

Please let me know if you have additional questions or concerns about managing your sales transactions in QBO. You can reach out to the Community at any time. Take care always.