Thanks for this most informative thread. I faxed UAL a request for a status match early this week (based on CO Plat status) and when I logged into my account today, I am now listed as Premier Executive.
I had (earned) Premier status >5 years ago (before I moved to Houston), but now that I'm back in the SF area, I will probably be flying UA more.
Also, when I tried to fax number on Monday, it seemed to be very busy--either busy signals or no pickups. It did finally go through after several attempts!