Thanks for keeping us updated with the results, sandy38.
To check where credits were applied in QuickBooks Desktop, you can run the Transaction History report. This provides the details of your transactions including the credits applied to them.
Here's how to pull it up:
- Go to Reports menu.
- Choose Transaction History.
- Optional: Click on the Customize Report button to filter the information you want to show in the report.
I've attached a sample screenshot below for a better view:

Feel free to check out this article for more information about customizing reports in QuickBooks Desktop.
You got me here if you have other questions. I'm always happy to assist you further. Have a great day ahead.