Composited matte edge issue

[Muhtawn]

Maybe I've just missed something silly here but I'm having an edge issue with matteing geo in geo or dust in geo with nuke, pdplayer, or rv player. Objects render correctly together of course, but do not composite without an edge.
Rendering exrs out of the vfb. Any ideas?

Max 2020, Vray Next 2.1

Thanks!

[Morbid Angel]

Can you post these renders and your scene for inspection?

[Muhtawn]

Thanks. I packaged the scene and the two render passes together. You'll see when the two passes composite together they have an edge issue.

[Buck]

Are you merging the renders with an Over? If these two objects holding each other out, you'll need to Plus them together, not Over.

[Muhtawn]

Thanks, Daniel! My lack of comp knowledge on that one.