I have importing set for video and audio on separate tracks.  The Help file says both tracks "are automatically grouped together."  Sometimes the tracks are imported ungrouped.  Or maybe I hit some key combo which ungrouped them? 

Also, a few days ago,I needed to check the Project/movie settings.  Ever since, this window opens up every time I begin a new project.  It never did this before, and I can't find an option for this window not to open.

Any ideas?

Thanks!