Print particular SOP blank invoice form

We are using GP 2010. 

We have two blank SOP invoice forms. Right now when we select "print documents" it maps to the incorrect blank SOP invoice form. 

It currently maps to the "SOP blank history invoice form"

We want it to map to the "SOP blank invoice form"

How do we get the "print documents" option to print the latter? In other words, how do we change the mapping?