I was intending to travel from Zermatt to Schaffhausen that day, but I am now going from Zermatt to Stein am Rhein. I did buy a Saver Day Pass for Aug. 17, 2nd class (and I already have a Half-Fare Pass). I just want to make sure I can use the Saver Day Pass on a different train than the one I intended. I have not booked the specific train.