Pokesav question

Is there a chance for Pokesav to delete your save file?

i honestly don't know, BUT I've used pokesav like 1 million times and it's never been deleted

how do i use pokesav

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Replying to #3

Download it, open it, load your save file (Backup!), change what you want, click on save, done! It's very easy.

You can also use this if you want to edit your save from NDS: http://www.projectpokemon.org/ppse-ds

Unless you took a blank save file and overwrote it with your game save file, then no.
All pokesav problems are user errors, not program errors.