Booking multi-cabin ticket using Chase UR points
I'm trying to book a multi-cabin itinerary (departing flight in Business, returning flight in Economy) using Chase UR points through their travel portal. This cannot be done online, and last time I called they didn't seem to be able to book any other options than what's listed on the website.
I was wondering if there are any tricks to make this happen? One idea I've had is to book a round trip in business class, then call in within 24hrs of booking, and ask them if they could change/downgrade the return leg, hoping that they have more options when changing an existing ticket rather than when booking a new ticket. Has anybody ever tried this, or managed to get a multi-cabin itinerary booked using Chase points in a different way (through their travel portal)?