I made an SMP to play with my friends, and I've been thinking about swapping out world maps every month or so in order to make sure there aren't too many TNT craters hanging around everywhere. So, I searched in the forums, and found stuff saying "download both worlds, and swap out the old world's playerdata with the new world's playerdata." I was like, "okay, great idea!" And then was greeted by a "worlds" folder without playerdata. Here are some screenshots:
first screenshot is the world's folder, second screenshot is inside the db folder.
Why is it doing this, and what should I do?