Hello there!
A time ago takes again this account and I would like to know that it has happened with all characters that I had former in the old server Ragnaros wotlk, seemingly they do not go out in any current servant I nor have way of recovering them, thank you.
Ragnaros and Deathwing got merged into "Icecrown" realm.
Players had almost 1 years of time to move their character for free to "Icecrown". It seems you missed that.
As last chance to recover your old characters you may try to contact [email protected] ( or by opening a ticket on website if you are premium)