This isn't really a problem but it's a question that's been bothering me for a while now. I've tried looking for an answer but I don't think I know enough to search properly.

Why is it that when you download clothes with different recolors, the recolors sometimes get mixed in with other sets. The picture example I used is of fakepeeps7's Polo Shirts & Shorts and Professor Pipsqueak. Polo is right in the middle of 2 Pipsqueaks. Why is this?

I'm really curious about this, too. It doesn't seem to have to do with the package name. I'd love to find out since it really bugs me when sets get split up...