not sure if anyone esle has had this happen but when i fight this one certain spawn (troll shaman army) my capital dissapers of the map. the unitas that were in it are still there but the city ceases to exisit. i lose influence and income so its not a graphical error its just gone. it has nothing to do with turn because i loaded an auto save city is back and i have played more than 50 turns without my city dissapering and its not combat either