Actually, dataUF was not what I was looking for. If my whole data has four rows 1, 2, 3, and 4, and after filtration only 2 and 3 are left, dataUF has 1 and 4. However, what I am looking for is an object that contains all of 1, 2, 3, and 4, in their original order. Is it possible to retrieve this object from a grid?