1. Back Out Plan - I'm running in a cluster, I'm thinking if I make a backup of my Domain folder structure before I upgrade and if something goes bad. I can restore the old Domain structure and load the modules the modules up the second cluster node. Will all of the other domains/po run as if nothing had ever been upgraded?

2. User/Mailboxe Accounts - After you perform the upgrade on the PO's. Are the user/mailbox accounts GroupWise native or eDirectory accounts?