Alpha issue in MRQ

Hello ! I’m getting an issue on my UE project, i’m trying to render an image with alpha but it’s not working. I tested on antother project and it’s working well, do you have some idea ?

Here is my project settings :

I’m rendering image in .exr with this simple setup :

And i’m getting my asset black instead of transparent asset

Do you have any ideas to get an alpha on my asset ? Without creating a new project ?

Thanks !

Holdout is intended to do exactly what is happening in your render. Any object set to Holdout will effectively be a cutout in your render wherever it is visible to the camera.

If your goal is to get just the sphere on its own alpha channel, you could set the other objects to Holdout, but turn Holdout off on the Sphere.