Help with making Rayquaza shiny SWSH

[dawate]

Hi all,

I am having a lot of trouble making this rayquaza shiny. So this is what I did- I edited a legal shiny rayquaza from JohnnyC- a streamer that bots legal pokemon and trades them. I edit the OT to be myself. I also changed the game to Sword instead of Shield. After I change the SID and TID to my own, the rayquaza automatically becomes normal. When I try to click the star and make it shiny, it becomes illegal. When I try to CTRL + Click the star to get Xor=1, it still is illegal.  Attached is the rayquaza in question and the legal rayquaza I edited from. The error I am getting is " Invalid: Unable to match an encounter from origin game.

 

Thanks in advance for your help.

384 ★ - Rayquaza - 870C152A9150.pk8 What I edited from.pk8

[theSLAYER]

Hint:
Dynamax Adventure bosses Dynamax level must be at least level 8. Dynamax Level cannot reduce.
Dynamax Adventure bosses have at least 4 perfect IVs.