When I try to setup a Helicopter Transport so that I can pick up my troops and then fly off to another location, the Helicopter will only sometimes land and very often if it does somehow manage to land, when it flies away, it just flies a hundred meters or so and then just stops. I think I've gotten it to pick me up and drop me off once out of over 20 different setups. The only one I ever got to work was when I had zero enemy on the entire map, I had my character and four other troops setup at Camp Maxwell and I had a transport helicopter setup at Camp Rogain. It picked me up at Maxwell and then dropped me off back at Rogain. Every other scenario I've tried have absolutely failed.
Updated Notes: I just confirmed that the Heli Transport does not work with enemies anywhere on the map. This was confirmed by setting up two scenarios. One without enemies (which worked) and one with enemies (which didn't). See Updated repro steps. {F21423}