For any add-on, Disney automatically puts it in your same use year except when buying 150 points or more you can request a different one. When put in your same use year, for purposes of banking or using points, the combined points are treated as if they are one contract. Example: If you have 200 and add 200, you now have 400 for banking purposes and if you decided to bank half, you would be banking 200 of the 400 total. If you get a new use year, then it will be considered separate from from your first contract and each will have its own set of points to use or bank. Note that in both of those situations the contract itself remains a separate contract that can be sold separately if you later decide to do so.