Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General PSA/IMPORTANT: PAK Extraction

I have translate part of English.xtml file in my language, but if i repak in .pak and changed language.lsx with the name of my language. Game start in English, if i put directly the folder in data/localization/mylanguage the game work fine? Any Idea for this? If i delete all language file .pak the game start in English :O
I use Steam version of game.