Hi Daniela,
Welcome to the Microsoft Q&A forum.
Based on your description, I understand that the comments attached to the text disappear when you edit the document with Track Changes turned on.
However, when I tested this in my environment, the comments stayed in place after I deleted or edited text with Track Changes on.


Could you please help me check the following:
- Open a different Word file, delete some text with Track Changes on, and check whether the comments disappear.
- Run an Online Repair for Microsoft Office.
You can refer to the following article:
Repair an Office application | Microsoft Support
After you complete these two steps, please let me know whether the issue has been resolved.
If the issue still occurs, please share a screenshot of it so I can better understand the problem.
I look forward to hearing from you.
If the answer is helpful, please click "Yes" and kindly upvote it.
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