User blog comment:Crimson Storm Mich/Future Units Preview v2/@comment-27740154-20170125144859/@comment-28149328-20170128063731

It would be weird for a non Light/Dark unit to get L/D miti. Every unit who has it is either L/D: Janice, Grahdens, Zekt, Regil...

So it makes sense they retain their elements.