Judging from the various maps, I think the current robber shack is in the clear for now. Unless theres something to the steam buildup for the train, and in that case I'd think the stop would have to be within a certain range, although that wouldn't necessarilty prevent a 2nd stop for a train robbery somewhere else along the track. Either way, I kind of doubt the robbery is in any jeopardy. But who knows?