Yes, any such change will be allowed, provided that the fare rules and conditions of the original ticket purchased permit this change. Appropriate fare difference and change fee penalties will apply. If you cancel your upgrade and travel in your original booked class, no refund will be provided for the upgrade value. If you change your travel date, you will be rebooked based on the original applicable fare rules. You will not be rebooked in the upgraded class and the upgrade amount will not be refunded.