So I'm doing random searches and there is VERY limited availability on some upcoming dates to EZE in business but with the caveat of a overnight layover in PTY. There is also some limited availability to SCL (with no overnight layover) in business. I'm seeing no availability to MVD. All these searches are for close in (next four calendar days) departures when CM would historically open up "I" class inventory for star alliance partners. As the other poster noted, it seems they are mostly opening up "P" class awards which are available only to the Connect Miles and Mileage Plus program.