Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods Using Levels from the MAIN-Module

I want to use the Levels form the MAIN-Module
without editing the Main-Version i am currently playing on.

I duplicated the Data folder, but when I save, it always seems to override the MAIN main Version...

I tried setting the dependencies to Main, but I couldn`t use the Levels from the main campaign this way (by the way: what does the dependencies actually do?)

Thank you ( =