When a vault token is created the token will be stored with the 'date to remove' set at the departure date of the reservation. If the reservations departure date is changed to a future date the 'date to remove' will be updated. If the reservations departure date is changed to a later date the 'date to remove' will not be changed. If a departure date fails to pass through on amendment the system will update the 'date to remove' to be current + 2 years as a fail safe. Vault tokens are then removed from use +14 days from the 'date to remove'.