Products in a bundle with default=0

Hi,

I've defined some product promotions that have two kinds of products. The first group are products with min=1,max=1 and default=1. In this case, once I'm in a Sales Order context and I chose that product promotion, these base products are added as line-items with Quantity=1. The other group of products are the ones that are not obligatory in the context of that product promotion, but you can choose to add to the bundle, and so, I defined them to have min=0,max=1 and default=0. When I choose this product promotion in the Sales Order, this set of products are not added