Argent tournament achievement are gone..

Q u o t e:
i faction change all my argent tournament achievement are gone i had them all and now all of them are gone.. <removed> i need blue post plz

I am afraid that anything pertaining to the Argent Tournament resets upon completing a Faction Change, which is clearly stated in the Faction Change FAQ: http://us.blizzard.com/support/article/FCFAQ.

If you choose to, you will need to complete the achievements again on the new faction.