White Forest Hex Editing

[Vladcik]

Heyah ! 
Little question since the ressource for this is quite niche. I've found Kaphotics' old notes about it : 

 

When I try to edit anything (like removing residents) it doesn't get applied. I load the game I see the same residents and Pokemon. However, if I reload the save I see that all my edits are reverted back. So I guess i'm obviously in the right spot but I'm missing something.

What could it be ?
Thanks o/

[Vladcik]

Still looking for any input here

Thanks !