The Memphis area has removed a LOT of their victor airways. The only one available currently comes in from the southwest. From Orlando, you’d basically have to route all the way over to Mobile, Jackson, and then up. There are also a bunch of MOAs you have to work around.
That may be why you’re not seeing them on this particular routing. It’s possible the sim decided it’s too far out of the way and gave up. Time to bust out the Tango routes!