In Gen 4, many moves had their category changed from Physical to Special or from Special to Physical because of the Physical/Special split causing them to no longer by sorted by type.
Seeing Dark Void change from a status to a special move in Z-A made me wonder if any other moves have had their move categories changed after moves had already been updated to reflect the split (i.e., Gen 5 or later). Dark void is still an interesting case cause I think it's the only move thats changed from a status to an attack at the top of my head