ok so i got DM and load my file with a handfull of side quests uncompleted as well as not progressing to the tops for the "ring a ding" quest noticed the extra 5 levels available with DM so i proceed to do "why cant we be friends" (leading this faction to join the great khans) then proceed to complete "oh my papa" (leading this faction to not join in the final battle and to depart mojave to find there own place in the waste) and now i am finding great khan generic npcs showing up in quite unusual places (my room in novac hotel,the abandoned bos bunker that leads to siera madre,as well as at the gate to mojave in the siera madre). i havent noticed any posts regarding this so here i am clearly this hasent been a problem with playing or progressing in the game(so far DM completed without trouble) but it clearly dosent seam to be an intended behavior as far as i can tell hope this helps.