iHeart does call it "San Diego's Hip Hop & Throwbacks". Perhaps what you are hearing is a tweak in the format.
Mixshows are becoming more rare everywhere, as the more talented DJs have tired of doing them for radio and are sticking with the clubs. And there are very few new talents to take over that role. As I noted in another thread, much of the audience has decided the novelty has worn off and would rather hear songs in their entirety.
I expect mixshows outside of nights will be disappearing at a faster rate now.