...I will post some new info, maybe a bit offtopic, maybe need a new topic for it.
I did it some time ago so I dont know if it still happens. (was ep3 though). I go to Archlord folder (In my computer G:\Archlord. I copy "world" subfolder to desktop. Then I go to my Chinese Archlord installation, and copy that "world" folder from chinese to codemasters folder. I run archlord. Then funny things happen: My wings dont show(necklace looks empty), strange item categories in item trader (i could only see item preview on top of window, no items were acually sold there ofcourse), my moonelf had a quest in Tullan guild registar (well had the {!} icon, pressed "quest" button, the quest text was unreadable, some words of the text was red, but the "accept quest" button wasnt working, just as webzens archlord quests are now.
I got scared I'd lose my wings and logged off, put the original "world" folder back in the Archlord folder and started the game and everything went back to normal.
About 3 weeks ago, I did other experiments of this kind: I used webzens "world" subfolder in codemasters installation: game didnt launch at all.
Then I took Korean folder and did the same. Again, game didnt launch at all. But, in this case, I first move the char to guild battle square & then do the little folder replacement: The game launched, but i find myself in the middle of nothing. Like the char was in the air with nothing nowhere. Moved camera everywhere, couldnt see nothing but the sky. char could not walk either.
Maybe somebody with more patience than me can try replace the folder & do something useful. Maybe realms armours are tradeable with this? Maybe we can find something else useful? I was too scared about my char, and my game installation being corrupted so I didnt try much.