Since i found out that the Joseon changed it's culture card artwork before the game release, i've always wondered why?...

I know other cultures like the Zhou, Romans, Greeks, English and the Franks did also changed their cards, but i felt like those changed for good, but for the Joseon, it didn't for me. So i'm just posting this thread to see what's the appeal of the old card that didn't make it to the oficial release.