How to use BetterRepack on Steam version?

[Blowing Wind]

(I know BetterRepack is the full game + the DLCs)
I'd like to know how do I make Steam recognize the launcher of the BetterRepack version.
I tried to throw everything in the folder and rename the EXE, but Steam says that it was unable to identify the game launcher and redownloads the default one (from the steam version).
Is there any trick to make Steam recognize the BetterRepack launcher?

I would like to take advantage of everything from the BetterRepack version here, and i'm an idiot that want to count hours in my profile lol

[Jehuty]

Rename both game's exe and launcher's exe.

Also disable updating (or / and disable internet first before test launch from Steam).