Just hit 1K and am perplexed as to whether or not I need to call UA and have them re-enter my MP# in all existing itineraries for the remainder of the year. I checked FT under the glossary and FAQ section and saw this. Therefore, which is right? Note the second paragraph.

Various other quick notes of useful value (Not in any particular single thread):

Tip #1: Changing Status Levels
If you change status levels (going from Premier to Premier Exec, etc), it takes about 2-3 days for it to become effective in the system. At that point you MUST call back United and have them "re-enter" your MP number into any future PNR's (Records/Travel itins) that you have for the system to reflect your new status level.

Update: You no longer have to do this. Your status will be reflected in your PNR within 2-7 days (seems like there is a weekly sweep, didnt figure out which day). Your BPs will then print with your status irregardless of when the reservation was made. HOWEVER, if you requested a 500 miler upgrade BEFORE your status changes, you must have it backed out and reentered in order to be allowed to clear at your new window (can't do online AFAIK). If you are lucky the CSR may clear you right there on the phone to be nice