Do you need better DPS vs tyra or snorlax? Will you get an extra premier ball? If yes, maybe, but in that cade I would power up to lvl 30 the c/dp one.
If no, then why will you change a mon that served you as is?
P.s. I have a 98 iv one, but lvl 30, no way to change him. Just got a 96 iv one today with c/dp from a solo raid. I also keep my c/cc that served me well. And the 2 alongside another lvl 31 c/dp and 2 vapes grant me +3 each raid. So until pushing other limits(i.e. Duo tyra) no need to mess with legacy moves.