Almost always some loot a take from a killed players disappears after some time.
Last time sever NL-0885 about 12:00 to 14:00 I killed a guy on NWAF near tents and took his silenced pistol and some stuff. And it,s gone after some time. The only way to save the loot is to poot it inside of a backpack the killed player have and carry it in ur hands.