4th Gen Why I can't miragate pokemon from emerald to diamond?

[chevychan]

Why I can't miragate pokemon from emerald to diamond?

It didn't have"Miragate from emerald"，then my save of emerald was gone!!!

I have National PokeDex in my Diamond and Emerald

They are English

 

[Shrump]

You need National Dex before you can migrate.

 

[trialbymagic]

:O You lost all your data. O.M.G.

 

[Gedow_Trainer]

You lost all your data?! I'm so sorry. I'll give you a free Pokemon! But yeah. You need the National dex

 

[PsyDragon Trainer]

Perhaps you didn't put the cartridge right in it? Or it's dusty? Happened to me once. And I'm sorry about you losing your save file... I know how it is :(.