TL;DR
It should be possible to hit a back button on the Trains interface when you click a specific station.What ?
When I need to bulk edit trains or stations, I open the Trains interface, click a station/route, then click one of the Trains/Station. When I'm done editing, it would be really useful to go back to the previous view. At the moment, hitting ESC or E will close the window and you have to open the Trains interface again, find the Station/Route you want again, then click the next train.Alternatively, bulk editing would be quite useful, but it's a bigger undertaking and seems like a sharper edge.