Yes it does work. Because there was a glitch back in the day that allowed Spaces in gamertags to actually count as an item. So poeple exploited it and made spaced gamertags. Then Microsoft patched the glitch, and all the spaced GTs that were made still existed, but now spaces do not count in gamertags as items. And so, if Task is reset, T a s k will be taking it's place, because nobody will be able to claim Task until T a s k is changed.
That's the short form of the story