You're welcome. Basically the Bosnians welcomed the Turks and, having no love for the Catholics (Croats) or the Orthodox (Serbs, Montenegrins and Bulgarians), with whom they apparently fought, they became Muslims with a vengeance, happily adopting the conqueror's religion against their old enemies. Also, Bogomilism and Islam resembled each other enough that it seemed a good fit/easy change.
AFAIK the Serbs, Montenegrins, Croats and Bosnians are really the same ethnicity and speak the same language. It's just that the Orthodox people use the Cyrillic alphabet (slightly different to the Russian version), the others use the Latin alphabet (this one) with accent marks, and as P.J. O'Rourke put it, the Serbs and Montenegrins don't go to Divine Liturgy, the Croats don't go to Mass and I guess the Bosnians don't go to mosque Friday nights.