potatoooooo

I create the file,i open the database,all good,but how i find/put the pokemon in to the file?i can't find how to do it

I use PKHeX and i make some pokemons but i cant find how to copy+paste the save file to my main game (pokemon brilliant diamond ryujinx emulator).Every time i do it on the save location file it starts from the begining(i keep back up save fils from my main game) and when i put it with the other save files,nothing happens