[SEE]

Never tried them in quick missions because I editted most of my quick mission files into FMB and altered them to Single or alterntive Quick missions but using the custom loadouts I created for the AC I wanted to use.

Untill I read that post by GRathos I had never been able to save/load any custom loadout - I was hitting the Back Tab to exit the menus and it stops the custom loadouts from saving properly. I will try one of my unmodded QM scenarios and let you know!

EDIT#

You are right Cheesehawk, even when saved you can't select them in quick or single missions. You have to open the mission file in FMB then select the saved loadout and save the mission file. The info I posted is only helpfull if you cannot save the weapons loadouts or see them in MP or FMB.