I should add here that the shadow catcher setup may seem a little weird. The option to enable shadow catching in on the Poser Surface node for both FF and SF. And, In SUperFly enabling it on any material of an object will turn the entire thing into a shadow catcher. This is because in Tempest (aka FireFly) shadow catcher is a property of a material. In Cycles (aka SuperFly) shadow catcher is a property of an object. We implemented so it was mostly the same as users were familiar with the FireFly shadow catcher.