It'll only be active in a new game, just to mention it again.
Else the procedure sounds complicated but is more or less easy.
You first would need an empty mod, I think this:
http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Number=514372#Post514372 is still working as well.
Has to be at the first position ingame in the load order!
(IF you by any chance are using already another mod, put it in there instead....)
SInce you altered the chars already, the generated *txt has to be in that mod sub-directory:
"d:\Steam\SteamApps\common\Divinity - Original Sin\Data\Public\Lockpick_und_Books_6e4472c6-46e5-42c1-8572-34fa34b8cb36\Stats\Generated\Data\Character.txt"
Don't mind my mod name ^^ was testing something and too lazy to change it back...the path thereafter is important.
I lowered the boost HP in normal too, cause IMO it is a bit OP and you'll see the change right after starting the game as well. So you don't need to play the stupid tutorial over and over again - if you ie see that change (in my case either 5 or 10%) then your companions will be altered as well.
