Not sure if II or not, but their policy is here, so, with II, you would cancel it.
8. II Exchange Cancellation Policy — Other than Club Interval Points–Based Exchange Confirmations:
(a) The only circumstances under which a Member using the Exchange Program may lose the use and occupancy of the Home Resort accommodations or relinquished points (including Preferred Points) without being provided Host Accommodations are if a Member: (i) using the Deposit First method of exchange fails to submit a valid exchange request within the time periods specified; (ii) using the Deposit First method of exchange requests accommodations that are not available and fails to accept any alternate locations and/or time periods offered; (iii) cancels a Confirmation seven days or more prior to the first date of occupancy of the Host Accommodations being canceled and fails to request substitute accommodations in accordance with II’s Exchange Cancellation Policy; (iv) cancels a Confirmation less than seven days prior to the first date of occupancy of the Host Accommodations being canceled; (v) cancels or loses the use of a Confirmation, at any time, due to the threatened or actual damage or destruction of the Host Accommodations; (vi) cancels a Confirmation for substitute Host Accommodations that was previously issued to the Member under II’s Exchange Cancellation Policy; or (vii) where the use of the Home Resort accommodations by II is lost or impaired due to circumstances beyond II’s control.
(b) Under II’s Exchange Cancellation Policy, a Member may be entitled to cancel a Confirmation where the Confirmation is issued seven days or more prior to the first date of occupancy. In order to cancel a qualified Confirmation, the Member must notify II of his or her desire to cancel such Confirmation within the first 24 hours after the exchange request has been confirmed. In the event that the Member has used the Deposit First method of exchange, the Member’s exchange fee will be refunded and the deposit will revert to a status such that the Member may redeem such deposit at a future time to place another exchange request. If the Member has used the Request First method of exchange, the Member’s exchange fee will be refunded and the right to occupy the Home Resort accommodations shall revert to the Member.
(c) When a Member notifies II of his or her desire to cancel a Confirmation seven days or more prior to the first date of occupancy of the Host Accommodations being canceled, the Member will be entitled to request substitute exchange accommodations, as long as the Member requests travel occurring no later than 12 months following the date on which the Member cancels said Confirmation for Host Accommodations. However, the time period in which the Member is entitled to request substitute exchange accommodations is limited, as follows:
(i) When a Member notifies II of his or her desire to cancel the Confirmation 60 days or more prior to the first date of occupancy of his or her Host Accommodations, the Member may request substitute exchange accommodations at any time from the date of cancellation up to 24 hours prior to the first date of occupancy of such substitute exchange accommodations.
(ii) Where the Member notifies II of his or her desire to cancel the Confirmation 59 days to 14 days prior to the first date of occupancy of his or her Host Accommodations, the Member may request substitute exchange accommodations 59 days to 24 hours prior to the first date of occupancy of such substitute exchange accommodations.
(iii) When a Member notifies II of his or her desire to cancel the Confirmation from 13 to seven days prior to the first date of occupancy of his or her Host Accommodations, the Member may request substitute exchange accommodations from limited travel destinations 30 days to 24 hours prior to the first date of occupancy of such substitute exchange accommodations.
(iv) II will retain the exchange fee paid initially to secure the canceled Confirmation.