Hello!
Would a class upgrade be recognized if I bought it only for a part of my ride?
Example: I am travelling by a train from Bern to Zürich with a stop in Olten. I have a 2nd class ticket for the whole route, but I decide that I want to change to 1st class in Olten. I buy a class upgrade and when the train stops in Olten, I take a seat in a 1st class carriage. Will this upgrade for Olten-Zürich be recognized if it’s accompanied by a ticket for Bern-Zürich?
Thank you!