So basically, i've played chapter 4 on Paper Mario: The Thousand Year Door yesterday but while playing i've already noticed that in the top-left corner it was saving in a weird other save file called '_00_00_-_00_00_00_00_-mariost_save_file' instead of the usual one called: '01-G8MP-mariost_save_file', so today i've tried to play again but noticed my progress of chapter 4 was completely gone, i have the weird file and the usual file, on the weird file is the progress (corrupted, can't import it) of chapter 4 and the usual one which works fine but only has the progress until after chapter 3.