It might be easy, but when quests don't work correctly and break the game, that's a problem. It wasn't even an exploit; I just wanted to see what it sells (now it also transfers artifacts), and I got a cloak on the first try.
I did everything as described above for the Necromancer campaign, and it worked perfectly. In the Elf campaign, everything is fine with the artifacts, but there are no Gnome artifacts until the Higher Vampire.
And where should I remove this, in Map.xdb?