As the title already is pretty obvious, i have two emission materials in my scene, one is red and another is yellow. So i wanna split them into two different render passes when rendering. But when i add the emission Pass, that wont work as all the emit materials are coming under the same pass. I’ve tried cryptomatte but its still identifying all the emission as single matte. Is there a work around for this so i dont have to render two time ? Thanks. 
Maybe just separate emission materials to objects and use cryptomatte object Id instead of mat id
I did split them into two seperate objects. Yet they appear as a slim outline in cryptomatte. Not very much usable in nuke either. Currently im using a different collection and putting the different object into each collection and rendering it out
could you set your emissions to be two distinct channels? say, red and blue, then split them and recolor in post?
Not sure what the full extent of your use case is, so feel free to disregard if that’s not helpful.