EZY certainly do not dummy file,even if the new ops manager from goe gave us the thumbs up to do it we wouldn't do it,if you know what you're doing there is no need.Correct me if i'm wrong but is there not a system in cfmu that looks at similar flt nos and city pairs and compiles a list to be presented to the airlines in question?On a daily basis the dummy plan will only reject if the flt no and city pair is the same,if the flt no is ahem ammended slightly it will ack and not rej so very difficult to spot i would imagine.