I was resyncing my whole library, and for a minute I thought there was a big problem because I'm using "preserve folders and filenames" and in the preview some tracks appeared to be missing a level of the folder tree. Then I realized that it's just showing the last two levels of the folder tree, so files which were a level deeper only appeared to be missing a folder. I think either it needs to say somewhere that it's not showing the entire path, or it should just show the entire path.