I was wondering why the CN GP 38-2 and the UP GP 38-2 do not show up in the main list of engines you can select in Player Profile. And is that why the new UP stuff for Kane Creek doesn't work in Peninsula Corridor.
I'm guessing it's because the game groups the CSX, Union Pacific, and CN versions into one thing. They're different versions of the GP38-2, but the game treats them all as the same locomotive.
The same happens to other locos like BR Class 47 (WSR green and blue) and DB BR 185.2 (Railion and DB). Only one variant will show up in the list but the mileage will be the total number.