Typically, a legendary/mythical that is tied to a spawner can be respawned using this method from my guide: https://billo-guides.github.io/cfw/la/legendary/spawner-rng#advancingtotargetframespawner
For Manaphy/Phione this is not the case, i've tried several different methods to respawn it with no luck, I'm curious if anyone has managed to successfully do it in a way that a retail player could replicate.
As of right now theyve been removed from the guide because they don't behave as originally believed