Originally Posted by
motastic
Not really the correct forum for this, but I believe you can no longer move your achievements from battle.net to battle.net and as far as I know you cannot merge two battle.net accounts, you can only merge with older WoW license account pre battle.net accounts era. So in short, you cannot merge two b.net achievements into one account.
[Edit]
This is new. It turns out you now can merge two wow(and other games) from different b.nets but you cannot merge achievements that are account bound. hmm but character specific achievements are fine. oO
hxxps://us.battle.net/support/en/article/2627