New updates:
Pokemon Locations
By Availability: https://pokemon-reborn.fandom.com/wiki/Pokemon_Location
All possible locations: https://pokemon-reborn.fandom.com/wiki/Pokedex
Static Encounters only: https://pokemon-reborn.fandom.com/wiki/Static_Encounters
Trade Pokemon only: https://pokemon-reborn.fandom.com/wiki/Trade_Pokemon
Gift Pokemon only: https://pokemon-reborn.fandom.com/wiki/Gift_Pokemon
MonoType: https://pokemon-reborn.fandom.com/wiki/MonoType
Big Top Arena Field Notes: Give Pokedoll to girl next to old man to the bottom of the PC area in Circus.
Orphanage Key: House right above Labradorra LCCC
The Zygarde quest will stay uncompleted for several tiers and therefore do not prevent the player from moving on to the next tier.
Read full explanation here: https://docs.google.com/document/d/1n0MGk8DAMW4lsbUh26LCoBtm1N0_AHQH_2ahvjaTAnY/edit
The only way to reset it is reload an earlier save. Also, the postgame guide has step by step photo instruction for that puzzle now. https://docs.google.com/document/d/1n0MGk8DAMW4lsbUh26LCoBtm1N0_AHQH_2ahvjaTAnY/edit#heading=h.al99r8dkx3tx