Thanks for joining this thread, billmcmahon1949. I appreciate your detailed information.
 

I've reviewed our investigation (INV-55376) about QuickBooks crashing while trying to import accountant's changes into company files and can confirm the investigation was identified as resolved on May 1st, 2021. The resolution came in the form of a new update.
 

Since you've confirmed your books are up-to-date with our latest release and have already performed all of the recommended troubleshooting steps in this thread, I'd recommend getting in touch with our Customer Care team and referencing the investigation's case number (INV-55376).

They'll be able to pull up your account in a secure environment, conduct further research with you, and work on having the investigation reopened if necessary.
 

They can be reached while using QuickBooks.
 

Here's how:

1. In the top menu bar, go to Help, then QuickBooks Desktop Help.
   
   
    
2. Click Contact Us.
   
   
    
3. Enter a brief description of your issue in our Ask a question (or tell us what's wrong) field, then hit Continue.
   
   
    
4. Select We’ll contact you for a callback or Message Us to start an instant messaging session.
    

Be sure to review their support hours so you'll know when agents are available.
 

If there's any questions, I'm just a post away. Have a great day!