I've searched for the thread to no success, but the short answer is you cannot. Superfly renders realistically, if an object is there it will be reflected including mesh/area lights. I had an elaborate western saloon scene and asked this question several years ago. bagginsbill came in and explained this.

simple set up, backdrop ... mirror and chair. 1 infinite light and one enlarged point light placed on a chair. You see the light in the reflection but not on the chair. In these situations you are best to make an existing object a mesh-light (emitter). Keep in mind what is frustrating in this situation is a great addition for enhancing shiny chrome and other metals and for eye highlights. I hope bb will come in an explain this far better than I can.

Boni

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"Be Hero to Yourself" -- Peter Tork