try this if you have a pc and/ or 2 SD cards..
PLAY all games once, then save progress onto a CLEAN NEW SD card.
take both cards to a pc
if you open the 'private' folder on the sd card it will take you,eventually to a file called data.bin. this is your save file for the specific game.
by copying the correct data.bin files from your original SD to the new SD you will be able to continue with your games where you left off.
MAKE SURE YOU COPY THE CORRECT data.bin FILE TO EACH SAVE GAME BY NOTING THE EXACT PATH EACH TIME
I've been able to do this with saves distibuted over the net so it should work for you........