This might show up twice due to login weirdnesses, if it does I apologize...

I'm creating a new prestage enrollment, and I have around 10 devices I want to assign.  I have individually found the serial numbers one at a time which is tedious but doable and checked the assign box, but in the interest of verifying that the correct machines (and only the correct machines) are assigned, I want to see only the assigned machines, not the several hundred "Not Assigned" ones.  the "Filter Results" box will let me filter for "Assigned" but that still shows me all the "Not Assigned" ones as well - I cannot figure out or find online the correct syntax to exclude the "Not Assigned".