According to IPC, components with compliant (press fit) pins should have full padstacks because of the force needed to insert the pins into the hole. If you suppress unconnected pads on internal layers, you could potentially push the barrel out of the hole. The pads act as an 'anchor' for the barrel of the hole. Originally posted in cdnusers.org by padmaster
What I was asking was, is there any way to 'edit properties' on specific pins within the design and attach a 'no-suppress' property to those pins. As far as I can tell, you can't, but your probably better off modifying the padstack and setting the internal layers to 'fixed' and then refresh padstacks in the symbol. This way you don't have to remember to do it for every design.