Background doesn't change when rendering animation.

[RobertRay]

Hi all,

I have a strange issue. I have 4 frames set up with each their own background spherical panorama. They are keyed so that only one is enabled per frame and disabled on the others.
When I render frame by frame, this works. I get 4 renders with each the correct background.
But when I try to render it as an animation it keeps using the first panorama and doesn't change.

And I would really like to render it as an animation as it will save me time starting each render/frame by itself.

[larry.vasquez]

Have you thought about doing it via Render Passes? You could have a pass for each frame.