I transferred my contact list from Outlook in my 2005 computer (but not folders or mail) to my new 2010 computer with Windows 7 and new Outlook and was using it for a couple weeks, creating new folders and sending mail, when one day the contact list, created folders and sent mail just disapeared. My inbox mail was there but it seemed to have mail that I previously filed in folders. I could not find any contacts in my delete folder. My email is Yahoo. What could have happened? Do I need to transfer the contact list over again or is it hiding somewhere?