Issue with image processing and proxy camera cropped camera

I want to run image processing on a proxy camera that is cropped. I made the proxy camera, and it shows in the front end as cropped as expected. When I run image processing on it (trying to detect cars in a driveway), it is running the image processing on the full uncropped original camera image. I am definitely using the newly cropped camera as the source for the image processing.

Any ideas?

Could you share your config for the cropped camera?
I’m unable to crop the way I want, it always show the upper section of the original camera