whats wrong with my train hazard?

[Shisho]

whenever it passes this gate it just dissapears. it eventually teleports back but this still happens. it also only drags the engine despite all the carts having the train as the parent still. it also seems to not trigger any paths but still follows them. i used this guide https://tf2maps.net/threads/tutorial-the-complete-guide-how-to-make-a-train.25260/

 

[Kill_the_Bug]

go here look at the cp_well map for train set up