Data Transfer of Supplier

Hi,

I have configured as per below document in my system to transfer initial vendors from ECC to MDG hub. my question is why data export  from source system specify to use BD14 to generate XML as BD14 do not have cremdm. MDM_CLNT_EXTR is not relevant. I tried MDMV. XML generated but data load fails when I try importing in MDG with no error in log. successful file read though

http://help.sap.com/erp_mdg_addon70/helpdata/en/fc/8dcc5284084a4ee10000000a423f68/content.htm

Tkz, ER