TR Legend PS3 save update failure

[Gpz750Turbo]

Hi, I'm playing TR Legend on PS3, I've done all levels, found all gold, all silver, all bronze and the game save says 82%. When I go to play the game again another day, I load the 82% game, have completed all levels, done all time trials, collected all rewards, done croft manor, only 5 trophies left to get, saved rewards, saved game, if the was a save I've saved it..... however, every time I go back to do the game, it's still says 82%, no time trials, no rewards blah blah blah.... have done this 6 times now, and getting fed up with it not saving..... Help please before the disc goes in the bin and I won't be too upset never playing TR again