If you want to backup your old saves, just copy the saves (file1.rpgsave to file6.
Correct me if I'm wrong, I don't have a local copy of KS. That'd be C:\Documents and Settings\ USERNAME\Application Data for Windows XP and C:\Users\ USERNAME\AppData\Local for Windows Vista/7/8.
Replace the old save with the new one you downloaded into the slot you want and you’re done Thank you for choosing the Katawa Shoujo Community Support Forum.
So if you have an empty slot and want to put a save there, just go into the game and save at a random place before replacing the old save with the new one you downloaded.
You must have saves already in your folder to replace them or else they won’t show up in the game when you go to load the new save in.
(Example: file2.rpgsave goes into slot 2 so rename it if you want it to go in a different slot).
This is where your save files are (file1.rpgsave to file6.rpgsave).
It will open a new window so click on a folder called www.