PokéBase - Pokémon Q&A
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I want to create a new NNID but I have to format my system. I'm worried that I will lose my data on Alpha Sapphire. Please let me know if I can format my system without deleting my AS data

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2 Answers

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no. I did it with my Y, Omega ruby, and pearl game but no effect at all.

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No, if your game is a physical cartridge and not a downloaded version, formatting your system memory will not do anything, as data is saved to the cartridge and not the system.

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