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  1. Hello Everyone, I have an issue with a current scene I'm trying to break up into passes for comping. I have an avalanche that is flowing down a mountain side and only want the cast shadow to render. My setup is: - shadowmatte material on the mountain obj - vm matte is on for the pyro obj - shadowmasks on the lights are * ^mountain When I render a single image in the render view I'm left with an alpha of my cast shadow, as I would expect. When I export a sequence from my mantra output to disc I get no alpha. I've tried jpeg and tiff formats. Is there a setting that I'm missing somewhere? Thanks Mike