Nostalrius Begins - Quality wow vanilla realm (1.12)

Good Afternoon. I got a very stupid problem. Looks like I have deleted my Drakefire Amulet so now I can't enter the instace. I have allready done all the quests for the Onyxia Lair atuunement, and killed her once (As a prove, I got a quest necklace - Onyxia Tooth Pendant ). Is there any way to return it?
Best regards.

Tyrael wrote:Greetings,

Please create an in-game ticket.

Regards,
GM Team.

No answer