[RERomine]

Once the surprise has been sprung, moving is probably a good idea unless the unit is actively engaged. The steel rain won't be too far off in the future. You just don't want it loaded when the arty starts. I usually won't pick it up unless I can move it a couple hexes from the hex it fired from that turn. This is rough with big guns, but most stuff 75mm and under can be loaded and moved away in one turn.