On starting mission Locos are not setup and this needs to be done by player (Still uncertain if this is a bug or game play ?) Pplayer can setup Locos thermselves following Loco setup guide goto https://train-sim-world.fandom.com/wiki/Driving_the_SD40-2,_GP38-2_and_GP40-2 I am using Multiple Unit Working. As MU Lead settings: Engine Run: ON Generator Field: ON Control & Fuel Pump: ON These three valves control whether the brake handles operate the brakes on the train: Brake Cut-off Valve: FREIGHT MU-2A Valve: LEAD OR TRAIL MU Rear Loco: Engine Run: OFF Generator Field: OFF Control & Fuel Pump: OFF Brake Cut-off Valve: CUT-OUT MU-2A Valve: TRAIL 6 OR 26 Please visit above link for more detailed information of Loco setups. AND THEN BUG for this scenario. Couple to formation - 7 vehicles, distance trigger of by 67yd and wagons bounce apart. Player then has to reverse to couple spot And then manually decouple, couple wagons. Player then has to decouple all wagons from Loco and this causes couplers to vibrate in place. Further on in the scenario player must stop Loco on trigger spot, if Loco is not at 0yd, trigger will not activate. This is before vehicle repair siding to uplift wagons. I wish this game had save slots.