A Microsoft file hosting and synchronization service.
Hi Andrew F-NAV,
Thank you for posting your question in our community.
I realize that you've encountered a problem with Excel online Changes being backlogged and I understand how you feel.
Since the Microsoft community only provides technical support for software and no community members have access to backend server data to assist you in data recovery, I will do my best to answer any strategic and technical questions you have regarding the software.
Here are some advice.
1.Recommended that you try to restore the version to the corresponding version in the version history of the Excel file, refer to the following link: Restore a previous version of an Excel file - Microsoft Support
- Log in to OneDrive on the web to see if the Excel file is stored on the server.
If the above methods don't work, we recommend contacting the OneDrive team Personal Cloud Storage – Microsoft OneDrive for help with data recovery issues.
Note: Before clicking on the link, you will need to visit onedrive.live.com with your browser and sign in with your Microsoft account, then clicking on the link will automatically redirect you to the OneDrive webpage to send an email.
Best Regards,
Gina-MSFT | Microsoft Community Support Specialist