Related Questions:
I changed my booking to Lost but it's not giving me the option to cancel the reservations on it, why?
I have reservations made with Mews but I can't cancel them when I change my booking to a lost status
Answer:
Changing the status of a Booking to Lost will give you the option to Cancel your Reservations and charge a cancellation fee. This option will only appear if your Booking has Optional or Confirmed Reservations. Reservations that have a Processed status cannot be cancelled.
