Booked on COPA ticket on D operated by United routing PTY-EWR .I tried to do online seat selection and COPA website pulled up the seat map for United. But it gives me seat options only in Economy Plus and even in regular Economy. Is the D class in COPA means Economy Plus in United? or Business CLass in United is First CLass in COPA?If that is the case, I should queue on Economy class lane at United check in at PTY even though Im holding COPA business class ticket? I don't want to be embarrassed and got booted at United Business CLass CHeck in