Hotel Dusk: Room 215 Says Saved But Doesnt

ok ive started the games from beginning over 6 times ive saved mutiple times on all 3 slots and when i shut off my ds and start it up later the save file is never there andi have to start the game from scratch it really annoying is ther a patch or anything to get it to save?

https://www.romulation.org/forum/index.php?topic=1462.0 Updated firmware etc.?