AX 2012 - Data Migration

Hi,

I am a beginner of using AX 2012. I would require to perform the data migration such as product master, COA, customer, vendor master & etc.

In previous AX version (AX 2009), I used to use the excel import/ export function which is under Administration module. However, i could found this feature in AX 2012. 

Does AX 2012 still come with this excel import/ export function? May i know where is it and what are the steps?

Any other better way to handle data migration?