I noticed they disappeared last Sunday. I did not use them often, so I can't tell right time when they disappeared. Maybe it was after update, but mabe earlier. Also I try to get a quest for aquiring Negators of Unarius again, but quest is not available to me. First I thought that I throw them away by mistake, but some of the players who have them told me that is no "drop" option for Negators of Unarius. I did not report right away when I find out they disappeared, because there was possibility ...