I am running Mac OSX 10.9.3. When I move a lot of Outlook 2011 for Mac emails from one folder to another within Outlook the computer loses it's index information . I have to reindex the whole computer in order to allow sorting in Outlook. Otherwise when I sort by unread emails, it show nothing even though there are unread emails in the inbox. Anyone have anythoughts on why this happens and how to prevent it?