Thanks for the reply, but that's not what I'm looking for. I can get done what I need to, but it involves saving the color pic as png WITHOUT embedding alpha information, then saving the alpha separately. Then I open Photoshop and load both pics. Select the areas I need from the alpha, then save the selection, then load the selection in the color pic. Then copy out the selected pic, then paste into a new transparent image. Not a fun thing to do hundreds of times.

With Vue 5 I could save as a PNG and check the "Embed alpha channel" on the save dialog, and I would end up with a transparent PNG with just the rendered object, exactlty what I want. But it doesn't work the same way with Vue 6. I get the exact opposite of what I want then, just the inifnite plane with the rendered object removed where the alpha information was.

I can't use a black background because I want the reflections from the HDRI atmosphere on the objects.

They changed it, but what they changed it to doesn't make any sense.