Hello, here's what happend.
1 ) got 90 9mm ammo > put in boxes
2 ) transfered 2 boxes to bag, left one for use in char
3 ) selected the box left in char screen, cliecked "Open 1 box"
4 ) Found myself with 90 ammo again, the 2 boxes in the bag were unaffected.
Thank you for your work
PS:. I also have Cooking pots constantly disappearing and reappearing after relog, but I could not track a specific case