I can share additional information about the error you've encountered, @Sdud.

I can see that the issue with an unrecoverable error when importing an Accountant's changes to a client's company file is still in progress. Our Product Engineering team is still working on a fix. 

You can also ask our Customer Support to add you to the list of affected users to receive an email notification once we resolve the issue.

Here's an article for more information with adding your accountant’s corrections to your company file: Import your accountant's changes into your company file in QuickBooks Desktop.

Let me know if there's anything that you need with updating your accountant's copy. I'm always here to help you out. take care and have a great rest of the day!