@HellLois As shown in the picture most of the drop down menus are greyed out. The ones that aren't greyed out don't have any other missions listed in the drop down menu.
looks like you're using a Treason code, the one from the special JSA event pack. I had the same issue when setting it up. If you recall it had it's own event packet with those missions in that order
Ah you would be correct. I do have a couple of Treason sets waiting to get used this year. I've been pre registering the codes ever since CB announced that they make them expire now.