Q.What happens to QR-Ticket if I change reservations?
If you change only the train (not changing the boarding date), you can use your original QR-Ticket.
If you change the date, route, or number of passengers (including party composition) of your reservation after printing your QR-Tciekt or adding your QR-Ticket to Apple Wallet, you will need to print or add it again.
If you change the date, route, or number of passengers (including party composition) of your reservation after printing your QR-Tciekt or adding your QR-Ticket to Apple Wallet, you will need to print or add it again.