[0.15.10] Fluid wagons not unloading after load

[papercrane]

I've been having an ongoing issue with certain fluid wagons not getting connected to the pumps at some times. This seems to be happening after loading a save with a train stop heading north. I'm not 100% sure if it's only on loading that this happens but that is when I have noticed it. The train is still in automatic mode and is at the station but won't connect to the pumps until I tell it to go to another station and come back or drive it backward manually then have it go to the station.

[Rseding91]

Please upload a save file that shows the problem. Without that there's not much we can do.

[papercrane]

If I can reproduce it again I'll grab a new save.