Originally Posted by
aliv
actually, to be even more accurate about it - the actual status rollover happens on next friday or sat night followed by the last day in feb - that is when the delta makes all the status updates. in Feb 2006 I went from a PM to a GM and was still able to get into CRC on like march 3rd as my BP still said PM. I am back at being PM again at least until first week of March 2008

Your boarding pass will read the Medallion status you had at the time your SkyMiles number was originally entered. The status on any reservation does not update automatically.