xmog

hello
i tried to xmog on mage Bloodsurge(sword) into Heartpierce(dagger) but not allowing me to do it (this item cannot be transmogrified with that appearance) . Meanwhile on alt i had no problem to xmog ShadowEdge(axe) into the sword. is there any kind of solution to xmog bloodsurge into a heartpierce?

xmog on wotlk follows these rule:

You can Transmog items of same type and class:
Plate Helm > Plate Helm

You need to be able to equip the item, otherwise you won't be able to transmogrify it.

1H Sword <> 1H Axe <> 1H Mace
2H Sword <> 2H Axe <> 2H Mace

Polearm <> Staff

Bow <> Gun <> Crossbow

Daggers <> Daggers
Fist weapons <> fist weapons
Wands <> Wands
Shields <> Shields

thx for reply!