I will start by admitting that I know very little about what you need to do with the save files, but what I do know is that the file needs to be placed at the exact same spot it was deleted from.
I'll try to elaborate with a quick example of files stored on your computer; let's say you store the Arcuz files in this section of your computer:
C:\\ProgramFiles\\Internet\\SavedGameFiles\\12345\\0987\\Arcuz\\5678\\arcuz.sol
If you were to place that particular save game file in the 'Arcuz' folder, instead of the '5678' folder it was in originally, the game cannot find/retreive it because it would only look in '5678' (which is now empty) and not 'Arcuz' (which would then contain both the '5678' folder and the 'arcuz.sol' file.
I hope this was the problem and my short example can help you try to make it work again. =)
