I have a saved search where I show the bills and purchase orders.

In the case of the bills I only show their amount in one column (it must be an amount whitout taxes) and for purchase orders I use three columns where I show their amount, billed amount and pending amount (these amount must also be without taxes)

One of the search criteria is that the main line is false so that it can above all show the information of the purcharse orders (They are the three columns mentioned above)

But when I add the column of the related records it only shows me what is related to the orders and although the bill has some related record it doesn't show something.