Join Date: May 2001
Location: Portland, OR, USA
Programs: UA 1K 3 Million/ex-many year GS, AA PLT/2 Mil, AS MVPG, HH Dia, Starwood Life Plat, Hertz PC
Posts: 1,401
Just as a data point I had flights post (old UA from 2/29 and old CO from 3/1) with no adverse impact on previous totals. So it is not universal.