Actually, i'm guessing that if everything was moved to a new server...

If their was say, an hour difference between when everything from the forum was moved to the new server and when the new server was switched into use,,,, everything that was posted in that hour would not have been stored on the new server,,, and lost when the switch over was completed...

Of course that's only a guess, but I think I read somewhere we are now on a new server?