How far are you moving it to?
When we moved from our apartment to our house(5 minutes down the road), we went out and bought a few 5 gallon buckets from I think Lowes or Home depot. (we had two tanks so had to make 2 trips)
Two buckets we filled with the tank water and put the fish in there. One bucket we filled with water and put all the decorations and plants in it( have to keep everything moist) Another bucket we just filled with water to put back in the tank, and we left just enough water in the tank to cover the gravel to keep it wet.
Sounds complicated but it went better then we thought. Its good to save as much of the tank water as you can.
Hope this helps!