I recently disable a users Mailbox on the server and created a new one for them (her mailbox was corrupt and causing all kinds of issues).  Before doing so, I exported their entire mailbox, to include Calendar items, to a .pst.  After opening Outlook to create her new profile I imported her mailbox without error, at least I thought so.  The user called me a few hours later after she discovered she could no longer promote others to Presenter in any of the Live Meetings she created prior to the disabling of her mailbox.  Does anyone have any ideas as to why she lost "admin" permissions on the Live Meetings she created?  Thanks in advance for the help.