Originally Posted by
CarmenOM
I went from GM to PM in December 09, making the transition to plat on an outbound trip SEA-AMS-CDG. Well before my return ten days later my account showed me as platinum, as did my boarding passes for the return trip. The SEA-AMS RT segments were on NW but my mileage account had converted to SkyMiles by then, so I don't know which system made it all happen by that time.
My understanding is that the system does some some of global update in the wee hours of Sunday morning. I moved from GM to PM during the midst of a stay in San Diego. In as a GM, out as a PM, complete with upgrade and status printed on the BP. Don't know about "forcing" an interim status change. Maybe SMI can enlighten us.