When migrating from file share to Sharepoint with SPMT the "Modified By" and "Created By" fields are always set to "System Account" and the Owner defaults to the Owner of the Site.

The information of who originally made the file/folder, which is usually the NTFS "Owner", gets lost in transition.

I propose that the NTFS "Owner" should be mappable to an Azure AD user which populates the "Created By" field, optionally the "Modified By" field, as well as the Sharepoint Owner of the corresponding file/folder.

Additionally, when viewing a Sharepoint folder in Windows Explorer via. the OneDrive client, "Modified By" & "Created By" should be available in the Properties>Details tab as well as Detailed View Columns like it is on the Web Client.

As Migrations have already been completed without this information, it would also be great to be able to go back and populate this missing information in cases where the file has not been modified since migration and not overwrite the changed files.