What if they made the change?
Booked a codeshare (on AA flt no.) between CDG-LHR as part of a 3-leg trip. AA changed the schedule and rebooked me on a BA flight for which AA doesn't have a codeshare. Can I still get full miles as if it were a codeshare?
Didn't really think about it much - either way it's still only a handful of miles.