About a month or two ago I posted the question asking if I would get AS miles for my CO flights.
Well, the answer is yes. Right on CO's web check in you can enter either your CO, AS or NW mileage plan numbers.
This particular flight was SEA-IAH & IAH-SEA. It was also both a NW and AS code share! All this was great since I didn't want any stray miles in CO's mileage plan if I could help it. The only bummer was that I didn't get any MVPG bonus miles for the flight. It's a bit bewildering to me since it was a code share but hey, I'm just glad the miles are in my AS account!