I possibly deleted a piece of Lord Valthalak's amulet. Please help!

Hello,

So I am either an idiot or there was some sort of bug. I just received the last piece of lord Valthalak’s amulet for the .5 dungeon set upgrade quest, and went to put them together to complete the quest but I do not have the top piece in my bag or bank. I thought maybe I deleted it but it is not in the item restoration list, and I did the quest over a couple of days span so I think it would be there. Anywany, I want to complete the quest and get the last pieces of my set but I cant. Please help Blizzard! Here is the ticket I submitted:

I am missing the Top Piece of Lord Valthalak’s amulet. This piece is needed to complete the .5 dungeon set upgrade quest. I have the left and right pieces, and I did have the top piece but it has suddenly vanished from my bag/bank. It is not possible to have the left and right pieces without first having the top piece becuase you get the top piece first in the quest line. The item is not listed on item restoration list. Can I please have this items returned to me so I can finish my quest? This is for my character Uncletickle on Living Flame classic season of discovery. Thank you!

not sure but the ghost outside of lbrs/ubrs entrance can restore it
he has a dialogue option for it at least

General discussion won’t be able to help you.

Try here. Not 100% chance they can help either. You may have to rely on your ticket and wait in queue with everyone else though.

Might have to drop the quest then start it again