Files can be fully recovered or partially recovered. In the case of documents especially, sometimes recovered files are previous versions in which case critical information can be uncovered.

EDIT: The files could have been deleted or modified over a long period of time. He also may have gone on a deleting binge at some point.

Files can be fully recovered or partially recovered. In the case of documents especially, sometimes recovered files are previous versions in which case critical information can be uncovered.