Just use a huge playlist. Open and close the program
multiple times and resume playing. A fresh opened
playlist works normal. After resuming one time the
list seems only to have 60 items. The playlist itself
keeps complete. Just try out some different situations.
At the moment I am using the svn version.

I also noticed, that huge playlists or archives cause
heavy loading and make mediabox hang. Especially
updating the current title info and album art doesn't
work very well. Multiple track skipping causes problems.