Eventually, you'll want to delete the old accounts. They present a security risk. In the mean time however, here's what you can do:
1. Change the user's password and log into their mailbox.
2. Change the proxy settings to allow the appropriate individuals access to the account. Have the proxied individuals forward to themselves any emails they want to keep.
3. In ConsoleOne, access the user's account and set their "Visibility" to "None". This will prevent their email account from showing up in the system address book.
In lieu of step number 2, you could log into the old account and "Share" the appropriate folders with the appropriate users. Those users could then drag whatever emails they want to keep to one of their own folders.
After everyone has had ample opportunity to pillage the account, DELETE IT!
-Ron
We all play from the same deck of cards, it's how we play the hand we are dealt which makes us who we are. -Me
murof siht edisni kcuts m'I - PLEH