UNIX and Linux do not preserve the creation date/time on files. They only preserve the last access and last modification times.
donít change access times on dumped files
Are you restoring from backup often enough for your users to notice or are you being proactive? Being proactive is very good. Frequently restoring from backup often indicates a problem, possibly with user behavior. Backups should be the kind of thing that end users wonder why they are created because they never see the backups being used to restore files.