I work with 3 snapshots. Primary, Copy of Primary and Working Snapshot. I wanted to try out a new Firewall, so booted to the Working snapshot, uninstalled the existing firewall as instructed, and installed the new firewall. After working with it for a few days, I decided to go back to my original firewall, so booted to the primary, thinking I would just copy it back to the working snapshot. What I found in the primary was that the original firewall was uninstalled, and there was no firewall present any longer. Surely, an uninstall in the working snapshot should not have affected the Primary.....or did I do something wrong?