Legendary quest - after changing faction

[experte]

Hello, i got a dk on allliance faction and he was catching the titanic runic stone, and after the change of facction, to horde, the quest bugged.

I tryied to talk with all wrathion in the way, and upgrade some itens in order to desbug the quest, but seems useless. Even the repair character, doesnt help.

The name of char is GOLLUN.

 

Thanks for reading. I really hope for some help.Thanks