Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting Mod in English In-game instead of chosen language

UUID = universally unique identifier (a series of numbers and letters)
The UUID is how the game identifies the text to be displayed; if the UUID is changed, then as far as the game can tell, the edited text is no longer related to the edited skill.

Have you checked Larian's Discord? That is more active now than the forum, and there may be people from Larian there who can offer modding support.
If that doesn't help, I can check on this.