Calimbo

How do I open a specific backup save file?

Greetings. I have been experiencing this weird bug fighting Giratina at the top of the volcano. I lost my first fight against it (directly after the cutscene with Zetta, Venam, and Melia), and was teleported to the nearest crystal. After defeating it on my second try, it did not disappear, it just became invisible. If I left the cell and came back to the cell, I could still fight it again. If I try to proceed after I beat it, the scene with Zetta, Venam, and Melia plays again, only that this time the scene freezes before Giratina grabs the MC. I don't know of this helps, but every time I fight it, the flight goes exactly the same (for example, I always get the paralysis proc after using Dragon's Breath, or the same crit after using Stone Edge). Any help?