Old account on AT WoTLK ?

Hi, so I just saw that Arena-tournament is not really what I used to know but does my old account still exist ?
Had everything unlocked on this acc for every characters, last time I logged was like 2 years ago ? I don't even remember but used to really like playing sometimes.

no, it is not possible to merge AT Account with a Warmane Account anymore.
That said right now on Blackrock (old AT Wotlk) all gear is free, even wrathful, so you can re-create all your old characters in than a minute with the Tamplate/pick a speck spec NPC