A question about how 2.0 saves sessions...

With 1.5 I would save all the clips/sessions in a session folder which I would park in my main AA folder.
This way I wouldn't have to navigate very far to open a session.
With 2.0 I am still doing that, but now when I save a session and all its clips a sub-folder is generated with the name of the session. Within the subfolder are individual clips from the session and, oddly, not all of the clips from the session are in it.
I still have my original session and its clips, but now I have this sub-folder that has some sort of association to my saved session.

Does anyone know why this is?

I can't think of a reason why I would need a sub-folder and its partial collection of a session's clips.
If I could stop 2.0 from generating these subfolders I would because they seem to be unnecessary.