upgrade from 2.2.x to 2.3.x

[Craig White]

Planning on upgrading my server from...

db4-4.2.52-7.3.el4
cyrus-imapd-2.2.12-9.RHEL4

to

db4-4.3.29-9.fc6
cyrus-imapd-2.3.14-1

obviously, I can move the mail files but I'm also concerned with the
various seen.db, mailboxes.db, annotations.db

Do I just copy them over and use berkeley utilities to update them?

Are there any web pages that cover the upgrade process?

Craig