Saving (exporting) internal playlists is important in case of losing the playlists for different reasons or in order to change the mobile phone and re-install Poweramp using the old playlists. But then the former playlists become file-based playlist, which are not editable!   The solution would be to change ("incorporate") the file based playlist into an internal playlist again with all the options for editing them. These new internal playlists can then again be saved for backup reasons and s