I took mine in to Audi in Artarmon and on first attempt I was rejected for the passenger side (both sides have very minor/early corrosion) because he said the rear 1/4 had paint (no depth checks done) in the past which I can accept that. However, that does not automatically mean the roof rails had been done at the same time! I called Audi Customer Service who recommended I get a second opinion so the local Audi rep is coming to look at the car on Friday at the dealer. Fingers crossed this time they come to their senses and admit it's covered. Corrosion isn't so much of an issue in Australia (no salt on roads etc).
I'll update after Friday as to the status of mine.