Item Sets

I have Twin Shadows set up in my item lists (in profile) but when I am in game on SR, it does not show up and I have to search for it. It's not that it's difficult to look for via search bar, but the item list is there to make it more convenient. That's what it is there for. My guess is that it doesn't show up in game on SR because it is an item that isn't available on a certain map. Maybe with other items the same is true. Haven't tested the theory.