Thank you very much for your posting, I had the same problem using Quickbooks Desktop 2021Pro I can't believe that this is still a problem 4+ years after Intuit...
If you are having the same problem that I had you need to change the extension of your file from .CSV (upper case) to .csv (lower case). This is what fixed it f...
Wow, I just found (after 3 hours of troubleshooting and following the endless suggestions of formatting from the quickbooks support team) that the issue was tha...