Game scene events → Bosses mechanics → Knife boss → Player enter boss area:
You need to change the numbers of the player position to the new numbers of the boss area, so numbers like
-4896 (Used to trigger the player entering boss room cutscene).
-2048 (Used to define the top side of the boss room).
-2400 (Used to define the bottom side of the boss room).
-5184 (Used to stop moving the player exactly in the center of the room during the cutscene).
All of them you need to change them, some for the X position and some for Y, just change them to your new boss area numbers :)
Take a look at this screenshot, this is the Knife boss area, look at the numbers, they are just returning the boss room numbers (X and Y position).
