I am guessing here about what may have happened.
You have a folder Kodak 6200.
1. Where is this folder located?
2. Is it under My Pictures?
3. Can you open it and see your old pictures?

When you downloaded your photos you created another Kodak 6200 folder and
you can see the new pictures in this folder, but not the old ones.

When you made this new Kodak 6200 folder, you probably made it somewhere
else than under the My Pictures folder where your old Kodak 6200 folder is
located. Otherwise, you would have received an error message indicating that
you can not use this same name again.

So I think you now have two separate Kodak 6200 folders but they are in
different locations. For example, your old one may be:
C:\ ....My Documents\My Pictures\Kodak 6200
and the new one may be:
C:\Kodak 6200

An easy way to find where these folders are located is to search for them.

Click on Start, click on Search and All files and folders. In the textbox
"All or part of the file name" type in simply the word Kodak and click on
Search.

All folders and files containing the word Kodak will be shown in the window,
as well as were they are located.
If I am correct, you should find two Kodak 6200 folders.
If so and you want to move the files from the new folder to the old one, you
can do this easily by selecting the files and moving them to the old folder.

If you can't find the old folder, maybe it was deleted by mistake. If so, it
should be in your Recycle bin. Open the Recycle bin on your desktop, see if
it is there and if so select it and then Restore.

By the way, system restore cannot do what you tried to do.

Don't despair. With some help from here will get your photos back. Try the
above and if it does not work let us know and we will try again.