I would hope that Chaosium would be thrilled that anyone was still using that book. I like the young kingdoms setting, but think it was a mistake to try and port the BRP version directly into d20 rather than try starting from scratch. I get the impression that most of the d20 stuff for Chaosium's licensed settings was done a a recruitment tool for their BRP/d100 products. Of course, if this is the case, then they are likely to be very defensive of their closed game content.