Originally Posted by
estnet
No I think it matters whose METAL you fly not who issued the ticket - which is what I was told and was true when I flew JL metal on an AA issued ticket credited to AS
If you keep making that assumption, you'll eventually run into a situation where nobody will give you miles. The published rules say that flights must be operated and marketed. All you need is a single glitch and an agent might look up the rules and deny a retro-claim.
Avoid codeshares wherever possible.