Dovecot upgrade from Courier

[apettitt]

I created a new server for a webmail system because the old server crashed. When I created the server, I installed Dovecot and the old server had Courier. On the new server, I'm doing virtual users where the old one created system users. I moved all the folders over for all the users on to the new server and ran the Courier-Dovecot migration script. The files were created successfully with no issues. The issue I'm having now is that Dovecot is not seeing any mail in the user's directory. If I created a new user, it can receive mail with no problems. Also, if I send an email to an existing user, it gets delivered to the new folder but the dovecot does not see anything in the new folder.

Any ideas?