Problem with realm transfer

hi, i played cata for some months but i didn't like it now i want to transfer my 3 pg lv85 from Cata (neltharion) to MoP... i tried to do realm transfer free and with points but i can't choose a different realm.
Are my points not enough? (20 points) It isn't displayed how many points are needed to transfer. Thanks in advance and sorry for my bad english

Ps. I'm a player who play with all classes and leveling all of them is so much boring, more if i have to level the same 3 favorite classes once again

resolved... sorry didn't notice the realm transfer faq

do i need to use points for realm transfer ? im from nelt want to transfer to frostwolf

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Originally Posted by MALAYSIA

do i need to use points for realm transfer ? im from nelt want to transfer to frostwolf

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You can not transfer to different expansion.