Train depots can copy any gauge size.
So, with additional train gauge sizes (Say, from mods),
You can click any depot of any gauge size and copy any train from any other gauge size.
The trains work perfectly fine on each other's gauges. Able to use that gauge's stations and everything.
So, probs should just have train depots verify same gauge size (Or that the train cars/wagons of the copied train are allowed to spawn at that depot) before copying
Train depots can copy any gauge size. So, with additional train gauge sizes (Say, from mods), You can click any depot of any gauge size and copy any train from any other gauge size.
The trains work perfectly fine on each other's gauges. Able to use that gauge's stations and everything.
So, probs should just have train depots verify same gauge size (Or that the train cars/wagons of the copied train are allowed to spawn at that depot) before copying