1. You also can not sell a contract with an add-on as one single contract.
Example:
You buy a master contract for 150 points
Later you buy an add-on of 50 points
If you want to sell all 200 points -- it is two contracts being sold with two deeds and two closings.
2. If you sell a contract where there are multiple contracts with the same membership number then you need to see how points were allocated for that specific contract.
Same example as above but you a reservation for 250 points. You use 75 points banked from prior year, all 150 points from current year and borrow 25 points from next year. Next year you sell the 150 point master contract. It is likely that member services borrowed those 25 points from the master, but it is also possible they borrowed it from the add-on. Now with the online access we know for sure, but before you would need to call to find out.