I was attempting to consolidate ammo from two sources into a single magazine. Removed magazine with 5 rounds from 1911 and placed in inventory. Clicked empty magazine on mag with 5 rounds. The 5 rounds were removed and occupied an open space in my inventory. However the moment I clicked empty magazine, a 2nd 1911 mag in my inventory changed from marked 3 rounds to zero rounds. The ammo from the 2nd mag did not enter my inventory but was completely deleted and did not return when dropping or refreshing the item.