From: Los Angeles
Are they Blue?
Do they turn red when you select them?
Is the second mission more than 6 hours after the first?
If the answer is "yes" to all, then they have 2 missions plotted for the day.
If the answer is "no" to any, then please give some specifics - I tried your steps and could not duplicate.
H & HS;
BtR-Beta, '43 campaign, Turn 2
Changed 18 Burma Sqdn/Med AF to Bost IIIa,
Plot Bombing Mission, Palizzi AF 950,1345
Pick Lead Unit
18 Burma Sqdn, Boston IIIa 0 a/c ready shows white, in the display.
Moved 12 Grp/XII AF to Le Sers 591,1420,
Plot Bombing Mission, Cagliari Port 565,1221
Pick Lead Unit,
12 Group, B-25d, 0 a/c ready shows white, in the display.
Fighter units moved - 27, 71, 94 Sqdn/XII AF - show white in display with 2 a/c in display.
Fighter unit changed - 81 Grp/XII AF - does not show.
I have not selected any of these units and run a turn -- to see what happens.