Moon Alola Champion Problem

[gbonfera]

Hi! recently i lost my good played 1st legit save from my pokemon moon.. and i 4got to

back it up before using pkhex, and bugged in the pokemon center.. ok..  i started a new one.. and in the middle of the campaign

I edited the save and checked the "is alola champion" on pkhex.. ok.. then i final arrived in pokemon league and make a second run..

When going for DEXIO and SIA to be able to mega evolve, they never showed up! i went back to pkhex and unchecked "is alola champion"

beat the elite 4 again, the full credits roll on.. everything normal.. and they are still not appearing.. nor the guy let me go to the battle tree

is there a way to fix this?

thanks a lot in advance

[Kaphotics]

Disclaimer at the top of the event flag editor:

Quote

Altering Event Flags may impact other story events. Save file backups are recommended.

...