As of the latest version, it seems that Non Audio Items (such as scripts and dummys) seem to disappear ? For instance, you have a header-line on your M3U playlists in the form of a DUMMY which denotes the playlist hour (as created by StationPlaylist) - and mAirList “gobbles it up” when loading it
#mAirList DUMMY 0 START OF HOUR 16:00 - DRIVETIME
#mAirList COMMAND [OnAir - Drivetime] RUNSCRIPT D:\mAirList Files\Profiles and Scripts\OnAir - Drivetime.mls
D:\Station Jingles\TOP OF HOUR\Top Of Hour - Smokey Jazz.mp3
D:\AUDIO TO IMPORT\Arctic Monkeys - I Bet That You Look Good On The Dancefloor.mp3
D:\AUDIO TO IMPORT\Lightning Seeds - Change.mp3