Maybe on earth...
...maybe in the future
If I use the "free reconfigure" action of an unmoved Scout ship, and it turns into an Interceptor, is it correct that I can not use its ability to "maneuver" while taking a move action? My reasoning is that having an Interceptor move diagonally is an ability, and in this case the ship has already used its ability for the turn.
You are perfectly right. The ship can move, but not diagonally.