I'm trying to create a custom map where some trains are supposed to turn around at one station that is not a terminus.
Lets say the train comes from station A to station B. If contining in that direction, you'd end up at C. However, if you turn around you could not just go back to A, but also D.
However, in my tests, all contracts from A to D will always skip C, even if there is no link between those stations.

How can I tell the contract generator that all trains from A to D must stop and turn around at B? I want to realistically recreate the train network in my region.