When attempting to do a move request from Exchange 2007 to 2010 some of the mailboxes are showing over 10,000 corrupt emails. I have ran a isinteg check with 0 errors, created a new storage group, database on the 2007 server, moved the mailbox over to the new database to see if I could remove the corruption. We currently use C2C Archive One to arcrhive any e-mails after 3 months, so I am not sure if this is the cause of the move request corruption e-mail's error message or if it's not reading the archived e-mail headers correctly.
Any ideas?