John Clonts wrote:

Side question, I have tried filing via Duats a flight plan beginning
at a navaid, and it won't let me because it tries to convert it to an
airport (e.g. XYZ Vor yields "Airport KXYZ does not exist"). Do you
know of some way around this?

Why would you do this? If you are on the ground, you'd file a composite
plan. If you are in the air, you presumably would use a radio to file.

Is it a bogus plan?