Wit Spaces

[MrUseless]

Okay, I have a (hopefully) simple question about Wit Spaces. Do you have to have a unit sitting on the square to get the Wit bonus? I've read some other posts that state when you take a grey Wit square you have to hold it for a full turn to get the bonus. That makes sense. And i see the tile change color at that point. But it's not clear to me if you still get the bonus once you move the unit off that space.