During my time of travel, early September 2023, the line from Milano to Domodossola has some work being done and buses will run the route. I am buying tickets from Domodossola to Zermatt yet when I look for the tickets to buy them (Domodossola - Zermatt) it still shows the engineering work tag as to be careful with the route. If the engineering work is from Milano to Domodossola, why the train from Domodossola to Zermatt have this tag. Shouldn’t the train from Domodossola to Zermatt have no problems? Should I get another train?