Every time I've lifted my tank, I had the bike on stands to get the bike upright. Then, loosten the bolt at the rear of the tank, but leave it in place. Slide the tank rearward to the extents of the slot on the mounting tabs.
Now lift up the front of the tank and slip in a two-foot piece of wood (I prefer a 5/8" thick by say 3" wide piece since a 2X4 can be kind of thick)
Since the tank is still held fast by the rear mount, it can't roll side to side.
No disconnect is neccessary. There's a wire teather that'll only allow you to lift so far and it won't strain any of the hoses, wires, etc..
I plan to die young, as late as possible.