Welcome to the Community forum, @406Sparky. I'm here to provide information about the additional character of your invoice number in QuickBooks Online.
Possibly, there's a user who previously entered the name after the invoice number. QuickBooks has a sticky settings that will remember the previous information used and will continue to use this information unless a user change it. To verify, we can check the Audit log.
To resolve this, I suggest removing the name manually once more. If the issue persist, we can follow the basic troubleshooting steps to do Clear cache and cookies. This will help determine whether the problem is related to a cache -related issue. You can activate this mode using the following shortcuts:
- Safari: Control + Option + P
- Google Chrome: Press Ctrl + Shift + N
- Firefox or Internet Explorer: Ctrl + Shift + P
You can also try switching to another supported browsing application.
In addition, you can refer to this article for instructions on how to record a payment in your books when your customer clears their outstanding balance.: Record invoice payments in QuickBooks Online.
Feel free to leave a comment if you require further assistance with managing transaction details in QBO. I'm always here to help you out.