I have heard different stories,
One was he got stripped because he wasn't available to fight and politics moved Morales up to #1 contender to fight #2 David Diaz, (or maybe the rankings were reversed.) Or did Casamayor just give up the belt on his own?
The other was that he was given one of those Champion Emerits belts. But I thought they only give that when you can't fight for medical reasons. Review how Casamayor lost recognition and therefore how Morales-Diaz came about.