OOOOOH! I didn't know I had to use the system and save backup as well.well it works for me. Did you copy paste everything inside the save folder or just save 36 ?
You need to have the system save and system save backup.
If it's not that, it's probably because the trigger to get access to chaos route is hiding inside the data folder but I have no idea.
I even tried to transfert my save inside a new game folder with fresh data from bob and save 36 give me the chaos route so I don't know