Robert gave you the answer for proper export/import in the catalog.

Sangeeta Pandey wrote:Hello Experts,I have created Analysis reports using a generic user and worried as some one else may delete those reports.

If "generic user" is a shared account, that's where you are doing it wrong. Using a shared account make the "My Folder" useless as it isn't a private space anymore. You must have your own account, which gives you a "My Folder" which is really just your folder. Anything in the Shared folder can be deleted or edited (except if you enforce proper security), but "My Folder" is really just yours. Nobody else can get his hands there inside in a normal setup (not talking about offline catalog access or file system access).