Gothic 3 Freed 3 orc cityes and now they attack me on sight :S

After Freeing 3 orc cityes, im being attacked by new orc cityes i visit on sight, ive read a lot about it, but i really wanna have a chance to do all quests on all orc cityes before freeing em up, is there some code, cheat or wahtever to reset the AI like it was at game start? so i can enter new orc cityes and complete all quests inside? please i cant redo everything from start

Maybe it´s possible with the Character Helper. No idea if he speaks English though.
Why don´t you reload a savegame from before you´ve freed the 3rd city?