[2.1.7] Upgrading Train changes next station in schedule

[jabbablob]

Describe the problem by answering these questions

What did you do?
I upgraded a stopped train using an upgrade planner (train -> train(uncommon)

What happened?
The train was still at the station and the condition for the stop was still not fulfilled, but the "next station" changed.

What did you expect to happen instead? It might be obvious to you, but do it anyway!
The train schedule, and next station should have stayed exactly the same.

Does it happen always, once, or sometimes?
From what i can tell/reproduce, only on the first uprgade of a train. When you upgrade more wagons, it does not happen again.

Reproduction video:
https://youtu.be/GJUFxwyZXl4

I have also attached the logs.

I cannot thank you enough for this game and for everything you do to make it better!

[CryptoWyvern]

I've seen this too, details here viewtopic.php?p=695463#p695463