I wanted to try #Gnome3 on my #ThinkPadT43p 2005 - I know I know... too much for the old loyal servant...
I created a #bootenvironment as described by @mwlucas and installed the packages as per the #freeBSDhandbook. The old servant couldn't handle it... so I wanted to restore my system from the boot environment. After beadm activate and reboot everything went back to the previous state... except hidden files in my home directory...
Is this some kind of a setting in the #ZFS #bootenvironment ???