Hi All,
I am not sure if anyone else is having a similar issue, but my upgrade process has been as follows. Log out of gnome to lightdm. CTRL + ALT + F1 go to tty1, login in, then systemctrl isolate multi-user.target, snapshot my btrfs volumes and then dist-upgrade. However I have noticed on my systems when I isolate multi-user.target I get logged out of my tty session. I can log back in and snapshot and upgrade as normal. I can't seem to find if this was an intended change or I should be submitting a bug.
Ok I am an idiot, found the bug on debian and the topic on the forums;
http://forum.siduction.org/index.php?topic=5901.0Double.If a mod feels like deleting this please feel free to.