Once the redevelopment is complete at the end of 2008, all Star Alliance member carriers serving Paris – CDG will operate from Terminal 1. Until then, Air Canada and Austrian will remain in Terminal 2A and 2D respectively.
Well, from my personal point of view, I would rather have OS remain in CDG2 as AF and OS code-share their seven daily flights between CDG and VIE. It would really be annoying to have to switch terminals as you move from one flight to the other.