Before using version 22.12.18, you must understand how the save mechanics changed during this transition period.
One of the standout features was the new "wandering/crossover logic" for wild encounter location detection. This likely improved how the tool handled Pokémon found in Paldea's vast, open-world areas, making it easier to edit or create Pokémon that accurately reflected their in-game origins.
PKHeX is an open-source save editor created by Kaphotics (Kurt) that allows users to view, edit, and manipulate save files across every core-series Pokémon game. It supports various file types including .sav , .dsv , .dat , and .gci . The tool is widely used for: Idiot proof guide to pkhex - Saves - Project Pokemon Forums pkhex 22.12.18
The update enhanced how PKHeX handled the new format. It improved the legality checks for new mechanics, such as Tera Types and Gen 9 exclusive items.
: Changing Trainer IDs (TID/SID), money, badges, and coordinate locations. Before using version 22
Select any Pokémon from your boxes to view its stats, moves, IVs, EVs, and Trainer Info.
Verifying Paldean coordinates and encounter zones. PKHeX is an open-source save editor created by
: This update introduced the ability to view, edit, and calculate Raids and Mass Outbreaks for Pokémon Scarlet & Violet Legality Refinements
Beyond the major features for the new games, the 22.12.18 release included important technical improvements and bug fixes that affected its core functionality.
Fixed: Gen9a pc data import now behaves as expected. Fixed: Gen3 French LeafGreen now detects better instead of assuming FireRed ( PKHeX 22.12.01 - News Discussion - Project Pokemon Forums
: Access mystery gift Pokémon that are no longer available through official distributions. ⚠️ Requirements and Safety