File Server Resource Manager not moving expired files

I have setup a File Server Resource Manager task under Server 2008 R2.

The task has the following properties: - Type: File expiration - Scope: W:\Share\Company - Expiration folder: S:\Archive - Days since file was last modified: 1460 days (4 years)

The task runs, however "Expired" files are not being moved the to the Expiration folder. For example, a file with modified date "‎Thursday, ‎23 ‎February ‎2006, ‏‎2:42:27 PM" is not moved to S:\Archive.

Someone please help?