Originally Posted by jjlovecub
Just fly with your CO # but call them as they can store your WP# in the reservation to get the elite perks - but I think you will only get priority boarding and seating but not the upgrades or bonus mileage. I could be wrong, but that is what I remember.
I think you should be fine on CO. If you are not sure if the upgrades will
process okay or not.. book flight using your WP# and change it at the
airport or when your board to use CO OP #