Exchange & OneDrive
When files are mapped to a new user, they no longer appear for the original owner but for the user they are mapped to.
This means:
Employee portal: The files will no longer be visible to the original owner but will appear in the list shown to the new owner.
Admin platform: The files will shown related to the new owner. This means they will show up under both ‘Flagged files’ and in the charts, associated with the new owner and the new owner's department, if relevant.
If you choose to delete the mapping, the files will automatically return to the original owner again, both in the charts, Flagged files, and the employee portal.
NB!!! Specific to SharePoint
If you choose to delete a mapping on SharePoint, the files will no longer have an owner and will need to be mapped manually afterwards. This is because, unlike Exchange and OneDrive, no owner is assigned to each location on SharePoint.