Bug or not ?

[IvanK]

I create a simple single aircraft mission in FMB. I set Fuel on board in FMB to 40% and save the mission as a "Single Mission". I then jump in game and check the Loadout page. The Fuel slider is full right showing 100%. The Fuel slider cannot be changed (Niether can the waepons loadout). I then jump in game. The actual Fuel quantity on board is as planned in FMB at 40%.

So is this normal ?
How do I construct a mission that then enables me to change loadouts in game

(This with latest BETA patch)