After ensuring the mining prisoners survive, I rode the cargo elevator back down to the canyon to head for my next target; the ion cannons.

After battling through a couple of waves of Stormtroopers, the large double doors at the end of the canyon open up and another AT-ST strode out. I led it back to the first mounted cannon (which was surprisinly still operational) and climbed in. I swivelled the cannon round to bear on the AT-ST and... it had vanished.

I repeated this a further three times, all with the same result - get the AT-ST in proximity with the cargo lift and it simply disappears.

Just a heads up for the Raven QA team.