PC Stable Update 1.02, Fragnet server Vanilla, no mods. When barbed wire is mounted on a base fence, and unmounted using a set of pliers, the wire cannot be picked up or dragged into the player inventory. When the whole wall panel is dismantled, and the fence is dug up, the wire disappears. It does not matter if the barbed wire is mounted on the top or the bottom slot, once it is mounted to the wall it is unrecoverable. Considering the scarcity of barbed wire, this is very frustrating.