It is not a glitch. In order to see the stores that no longer participating in the drop, you need to do a search by zip code and see what stores are still listed. Also, if you are looking at the view where you select stores, the locations that you selected that are no longer getting them will be at the end of the list. Deselect it and exit out and then when you go back to the selection page again, it should no longer be there.