Pokesav won't accept .pkm files from a save

[FelixRodman]

PLEASE HELP

I have a 3rd generation save editor called A-Save. I have completed Pokemon FireRed and exported all of my Pokemon as .pkm files, and then imported them to my PC in Pokemon Emerald. Now, I have just completed Pokemon Emerald, and exported all of those Pokemon as .pkm files. Next, I want to play Pokemon Platinum. So I open up my Platinum Pokesav, load my .sav file, select edit under storage, select load box and it says, "ERROR Wrong file type". Now, it cant be the wrong file type because A-Save exported them as .pkm files and Pokesav Should accept .pkm files. I don't want to migrate the pokemon from emerald to platinum and risk losing them, I'd also have to beat the game first to do that. Please help. If it makes any difference, I used Visual Boy Advance for FireRed and Emerald, and I plan on using No$GBA for Platinum and SoulSilver.

Thank you

[Kaphotics]

gen3 pkm files are not gen4 pkm files.

use pk2pk to transfer them.