[COMPLETED] Rogue artifact weapon and class hall problem since crash

[makucha]

Character Name: Ninjakillerz
Item Name & ID: The Kingslayers - ID - 128869
Armory Link:
Details: (optional)

Hello,

I was writing about lost artifact weapon since last night crash. I got the weapon via mailbox, but I still can't get to Class Hall. It's like, I'm on the different map ID, Dalaran is not the same as it was when I was doing that quest. Probably because rollback canceled my quest chain and removed my daggers.
Now I did get the weapons, but it seems like I don't have that quest chain finished so I can't get into Class Hall. Can this be fixed? If neccessary,I'm willing to redo that quest line, just to fix this up.
I also don't know if this is right place to post this, if it's not, my apologies. I thought since it's artifact weapon related, it would be a good place to post this.
Thank you for your time,

Kind regards,
Mario

[LethalFactorLK]

Done