Interest Check - Fate of Inglemia - Birthright style game
Kark2 is right. There was a period, when 3.5 was at its peak of popularity, when Dragon was systematically providing conversions of a sort for all the more popular 2e Campaign Settings that had not had actual book conversions, whether WotC or not. So they didn't do anything for Dragonlance or Ravenloft, but they did do Birthright and Dark Sun.