Price break header and Price list line end date active

 Hi All,

Under Advance Pricing, we have item XXXX which is listed has PBH (price break header) and under Price break we give break up prices depending on the quantities.

Now when we enter the PBH, we can see the start and end date active under qp_list_lines with list_line_type_code = PBH.

When we enter price breaks, we can also see the start and end date active under qp_list_lines table with list_line_type_code = PLL.

My question here is,

Now how can we alter or change the start or end date of a PLL which is associated with PBH from application (not thorugh a data fix).