Achieving only completed tasks on Exchange 2010

Hi All

     I installed the Update rollup 4 for exchange 2010 service pack 2 couple of weeks ago.  All users’ mailboxes are moved to achieve mailbox after 3 months. Now after the update calendar and tasks moves across as well as expected.

I have one user that does not want his “not completed tasks” moved to the archive.

Is this possible? Or is there a way just for this user not to archive the tasks folder?

Thanks in advance

Regards gprajan