Holding points cannot be banked. They can only be used to make a reservation within 60 days or less from the date you make the reservation. As long as you have not reached the end of your UY, you don't lose those points. So if the original reservation was early in your UY, that will give you more time to reschedule your visit. If you don't use the holding points before your UY is over, then you will lose them. I suppose that you could regard it as a penalty for canceling with less than 30 days to go before your original arrival date.