Are you playing the game like you used to back then .. or in a different way perhaps?
I've noticed that quite often the same game is seen as 3 different games depending on how you play it (aka either internal, external or from real disc). So if you used to play from external but now is playing the game from internal .. then the internal game cannot see the "external saves". If this is your trouble then you just need to go back to your "old" playing-style to see the saves.
Asian version of the FF XIII can load any region of save game, despite if that save file is Europe or USA. The only thing I can see for now that why you're save games arent loaded because, maybe the file/files are associated with it is corrupted.