It doesnt seem to be working for me (or im not doing it right).
1. I extract the GameData_00 from the save file on modio.
2. Open GameData_00 in the editor
3. Give myself max BP and save
4. Replace the GameData_00 file in modio with the modded one
5. Rehash & Resign
6. Load the game
7. No max BP
Thanks for the help and sorry to be a pain in the ass.