A good strategy that will convert to a win. Ancajas can regain that title and be a champion again. Also, a good opportunity for the promoters if, in case Ancajas win, they can immediately call for another rematch/trilogy to decide who's really the one who deserves to keep the belt. It's a must for Ancajas or else he will be forgotten, as there are many competitive young fighters who can challenge Martinez if Ancajas failed his attempt to win back his belt.
The other scenario here if Ancajas wins other than the trilogy is that Martinez would go back to his original division and continue depending his belt while Ancajas would go on fighting Ioka which was the original plan of MP Promotions and might also be a chance to avenge the loss of Nietes in the hands of Ioka which for me, Ancajas has the better chance of winning than this fight.