I don't think points are added on automatically. That's a good thing, because you had enough points for your EOI to be selected and ITA issued. As you don't need and didn't claim the points, you won't then get Section 49(1) conditions on your residence requiring you to stay in that job or any other outside Auckland for a full 12 months. (Some people don't mind this condition at all, if it turns out they are happy in their job, and happy to settle wherever they have found somewhere to live near the job. But others would prefer to be free to move on if they happen to get a better offer.)