Talk:IDOLiSH7 Master Guide/@comment-24773550-20180525231332/@comment-30992949-20180526204424

I have my doubts about that happening, losing Stellar Stones and cards that is.

Data Repair just deletes the game's cache, the data, for example the voice acting in the story. If you press Data Repair after you've downloaded all of the voice acting and sprites, it will delete that, of course you can redownload all of the voice acting and sprites when you open up the story again.

If you're still paranoid about pressing data repair, you could always delete and redownload the game. It's basically the same thing as pressing data repair except you're not exactly guaranteed to have your account on there. Regardless, just be sure to have your transfer credentials.