Reg : Master Data services import

Hi all

I am using Microsoft Sql server 2012 Master data services.When i load data thru microsoft excel add in, the staging table for eg: stg.Category_leaf does not contain any data.Why?

Is there any option that we can see data in stg.Category_leaf

Rather if i insert thru sql query i can see the data.

Please help 

Thanks

Thiru