Muramasa is one of the special cases where the save data is stored on the game card itself. The save data on the card is deleted only if you delete the bubble while the card is inserted. Also, it's not possible to back up or restore a save from a game card using Content Manager, so PS+ cloud saves are the only way in this case.
Well, it's my lucky day, I erased the digital download, put on my cartridge and recovered everything
I don't want to play the main game again, but I don't know Why it bothered so much to lose the sabe data, thanks for the tip!
Now I'm having problems with Yomawari Night Alone, the game is crashing alone, don't know Why this could be happening