Modding animations for train stations

I'm trying to make train stations more compact and modular. I think I've figured out how to create the models and animations that I need - pics of my work so far included. I am not sure about how to get my modded freight station animated. It seems that animations state information for the base game freight station is described in FactoryGame/Buildable/Factory/Train/Station/BPA_TrainDockingStation.uasset but this file isn't included in the starter project so I'm not sure whether it can be modded. Has anyone done anything like this?