Convert pk4 to pk3 (Legal/Legit path)

[Blunern]

Hi Project Pokémon Community

I would love to convert this pk4 file to pk3 file so that Pokemon is legal in both gens. I read pk2pk app and other tools are used to fix the trash bytes, but I don't know the right steps to do so. Could you help me with the steps for this please? (One tutorial with PkHex would be awesome)

0050 ★ - DIGLETT - 6954009615D4.pk4

[BlackShark]

In PKHeX go to Settings > Advanced and set AllowIncompatibleConversion to either AllowIncompatibleAll or AllowIncompatibleSane.

Some information like the original gen 3 met location get lost on the tranfer up to gen 4 and are not part of the pk4 structure. PKHeX tries to reconstruct those values by getting the first possible match, which might not always be correct. If you do the backwards transfer this Diglett will have a met location of Granite Cave, change that to Diglett's Cave and the mon will be legal.

[Blunern]

Thank you very much for your quick answer. It was very helpful.