If i m generating manufacturing order on the basis of sales order, the products to consumed is populated by BOM, and the status is waiting for raw materials. when is click on edit button, it does not allow me to me to add more products in the product to consumed section.

Where as in version 6.1 of openerp when i do the same thing it allows me to add more products only if they are defined in BOM.

But in version 7 it is not editable ....please help how to make it editable in v7