[MoP] Trading system, no achievements

A friend of mine bought character from Trading System (Frostwolf realm) yesterday, but he didn't receive any PvP achievements.
No arena achievements and no Battleground achievements, only General/Quests and professions.
Any idea is it normal to not obtain the PvP achievements already earned by that character? Pretty sure it should have at least achievements from few battleground wins since the character came with conquest points.

because only on "Wotlk" achievements are binded to the character.
On "Cata" and "MoP" it is binded to the account. In fact if you check the armory of frostwolf characters in Trade it will show "0 achievement"