Hi @s w ,
Thank you for posting in this community.
There is no accurate way to see what a user is editing.
One of the better ways to do this is to look at the audit logs. Monitor user activity related to specific files. If you see recent edits or interactions, consider delaying permission revocation and manually sending an email.https://support.office.com/article/b37c5869-1b47-4a82-a30d-ea20070fe527
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