Hi there, @loj888.

Thanks for posting here in the Community and for providing a screenshot. Allow me to chime in for a moment and help fix the issue you're getting with the import list tab in QuickBooks Desktop (QBDT) for Mac.

I checked if there's an ongoing issue about this but there isn't currently one. To isolate this, let's run the rebuild and verify data utilities. If you haven't used these before they are automated diagnostic utilities that comb through, repair, and notify you of data damage within the file.

Here's how:

1. Go to File, then select Utilities and Rebuild Data.
2. Choose OK. Follow the prompts to save a backup.
3. Click OK when you see Rebuild has completed.
4. Now, go back to File, then Utilities and select Verify Data this time.
5. Should the Verify find an issue with your data, you will be prompted to Rebuild Now or View Errors. Choose Close, then perform the steps below.
     a. Find QBWin.log or QuickBooks.log files.
     b. Check the log file.
     c. Scroll all the way to the bottom for the most recent Verify information.
     d. Find the line that contains the LVL_ERROR, then check: Top data damage errors in QuickBooks Desktop.

For your reference, you can also check out this article for further guidance: Resolve data damage on your company file.

That's it! Please let me know how it goes in the comment section below. I'm always here should you have any follow-up questions and concerns. Take care and have a great rest of the day.