Factorio Forums

I'm not completely certain if this is intentional, but it seems unexpected and strange. The steps to reproduce are very straightforward.

Starting with a train having a single engine, single cargo wagon, and an assigned schedule:
1) Disconnect the cargo wagon and drive the engine away a short distance.
2) Place a new engine on the rails.
3) Couple the engine to the cargo wagon if you did not attach the wagon when placing the engine.

The schedule of the new train will now already be set to whatever the schedule was of the original train at the time it was disconnected.

Train schedules are stored in the train that the wagon belongs too, A wagon by itself is still a train and newly added carriages (wagons/locos etc) will use that schedule.

Nexela wrote:Train schedules are stored in the train that the wagon belongs too, A wagon by itself is still a train and newly added carriages (wagons/locos etc) will use that schedule.

Indeed. That's by design.

If you had 1 locomotive and 15 cargo wagons, mined the locomotive and put it back - you would expect it to retain its schedule - which it does.