If you create a fighter in VA, add specific weapons, ammunition and export the data into the editor, then the editor quantity of ammunition to be always less by one unit.
For example you added 3 missiles in a backpack, then in the game you will have only 2 missiles. You added 5 magazines in a vest? Well, in the game you will only have 4 magazines.
My friends, I have All done right. I made video. I think, now, you can reproduce the problem.
Focus! In the virtual Arsenal, in my soldier vest, has 3 trasser mag + 2 standard mag = 5 spare magazines + 1 standard mag loaded in the Katiba rifle.
In his backpack, my soldier has a spare 2 Missile AT + 1 AT loaded in Launcher = 3 AT Missile. In the Virtual Arsenal it looks is fine!
But, when I'm exporting this data in the editor, we see that the soldier has only 4 spare magazine(instead of 5!) and only 1 spare AT-missile (instead of 2!).
Look closely my video: http://www.youtube.com/watch?v=ea-hiviTx2A&feature=youtu.be