Mew can only be transferred ONE TIME into a single Pokémon: Let’s Go, Pikachu! or Pokémon: Let’s Go, Eevee! game.
Once it has been transferred to a game, it will no longer be available on the Poké Ball Plus to transfer again to a different game.
Important: If you transfer Mew to your game, then delete the save file, you will also lose Mew. You will not be able to get Mew again on a new game from the same Poké Ball Plus. Please take this into account before deleting or restarting your game.
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