am getting up to speed on using the render setup in Maya with Arnold. I have been sorting geometry into different layers/groups. I am lighting the whole scene with an HDR Skydome light. When I render out the different collections the HDR skydome is still visible in each. I have watched several tutorials on the render setup and it almost appears as if the skydome is matted out by default when non-light objects are assigned to collections/layers. Does anyone have any idea what I am missing? I am using Maya 2020 with Arnold 4.0.3.