From Two days when I opened my live mail and found many email messages return (Moved & Deleted emails) with cross line in Inbox.  Most of these had been moved in storage folder and a majority deleted email like read receipts and the deleted file emptied.  What caused these messages to return?

But When I am login into webmail does not occur

Version 2012 (Build 16.4.3528.0331)

Configured as IMAP