Maybe someone has a good idea for the following problem.
In our company, we just went through a take-over of our Microsoft 365 domain. During that process, all data from the old sharepoint was downloaded to a NAS and later uploaded from the NAS to the new sharepoint. Although this is basically good, all files within the folder structure of File Explorer (Windows) are now displayed with a wrong date and time of when they were created/edited.
When Office documents are opened with the corresponding app (Word, Excel, etc.) and are not changed/saved, the date and time of some additional (usually hidden) columns in File Explorer get updated with the relevant date/time. Obviously, that doesn't apply to the last changed date and also it doesn't work for PDF documents.
Columns before opening the file
Columns after opening the file
Therefore, my question is, whether it is somehow possible with a powershell script or with a tool to automatically correct the last changed date/time from the document information tags (metadata). Of course, the action itself must not be noticed as a change by sharepoint - otherwise it would not help us.
If I'd have to run a script/tool for each folder seperately, it would be ok, but it would be preferrable to be able to process all subfolders at once.
Thanks for any suggestions.
