Adding Price List lines to Price List through Bulk price list import

Hi

I am looking for clarification on QP: Bulk Price List Import program.  The scenario is

I have created the price list from Pricing User Responsbility and trying to add price list lines  using QP: Bulk Price List Import Program. As the price list will have  the Orig_sys_header_ref  same  as price_list_header_id.

I tried to populate column Orig_sys_header_ref in  QP_INTERFACE_XXX   TABLES with header_id  and run the Bulk price list import program.

The interface are not picked up for processing

 Pl provide your valuable inputs

Thanks,

Seshu