Title basically, you cannot do the quest anymore because pre patch doesn’t have an option to return to the old ICC.
So I submited a ticket and it said that I needed to abandon the quest and take it again, guess what? The quest is gone and I cannot find it anymore, I was on Reforging The Sword, because you can go to the old ICC with Party Sync, but when you reach this part of the questline, you cannot complete the quest because Party Sync doesn’t allow it. So now I’ve lost 4 hours of farming the item and the quests is still bugged
This guy solve it https://www.youtube.com/watch?v=NPdMLbcOz0Y&t=1s