I appreciate you for getting back, @Orchestra2001.
Rest assured our engineering team is now looking for a resolution to isolate the issue when exporting reports to Excel. Once you're already added to the list of affected user in this investigation (INV-55426), you'll automatically receive email notifications of the latest updates. If not, I recommend getting back to them so an agent can gather your details securely.
On the other hand, you can open the topics from this link for more hints and resources about handling reports in QuickBooks Desktop for Mac: Create and manage reports.
If you have any other questions about reports, let me know by adding a comment below. I'll be right here to provide additional assistance. Have a good one!
