Yes, you can transfer Pokémon from the new Leaf Green and Fire Red ports to modern games as Home support confirmed
The Pokémon Company has confirmed that players can transfer Pokémon caught in the upcoming Nintendo Switch ports of Pokémon FireRed and LeafGreen to modern games via Pokémon Home. This feature ensures that classic Pokémon from these generation one titles will be accessible across other games in the series.
Eurogamer
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