First off I want to say thank you to the OP and users who have contributed to this post, I have some questions so I made an account.
For Pokémon hatched from eggs in gen 3 that were transferred to gen 4, once transferred to gen 5 do those Pokémon's date change, or is the one kept from gen 4? Does the egg data even stay when Pokémon are transferred to gen 4? As well as gen 4 to 5.
For gen 3/4/5 Pokémon that are transferred in gen 6/7 games, what is the met location? Is it supposed to be Poke Transfer or the Region it is from?
Is it possible to make pk7 files to pk1-2 files, specifically for Pokémon that were transferred from the 3DS VC Games? Or might it just be better to recreate the Pokémon in PKHeX if not possible?
I might have asked a question that has already been answered, so if that's the case I apologize. There is a lot of information to take in here.
Thank you in advance to whoever may respond!