where is "move mailbox" logged?

Tech-Archive recommends: Fix windows errors by optimizing your registry

I'm in a panic. Moved some users mailboxes between storage groups (same
server, faster disks), and one is missing some items (per user).

I'm restoring right now to a recovery storage group.. but where is the
results of these "move mailbox" operations logged so i can see if there was
a problem or what?


.