Have a very simple scene set up . . . nurbs sphere, with Blinn material assigned. Trying to rotate an IBL sphere in the scene to result in moving reflections across the sphere. Rendering single frames from the render view shows the rotation transformations keyframed on the IBL sphere, however, when set to batch render (mental ray, final gathering on), the IBL sphere does not seem to read the rotation keyframes. What gives?
Also, beginning the batch render at different points in the timeline results in the correct positioning of the rotation (similar I assume to the results of rendering out single frames from the render view from the timeline). Seems like Maya only likes rendering the IBL rotation value from the default "beginning" frame of the render, and ignores all other keyframing after.
There is the "infinite" option under "imaged based lighting attributes" that when unchecked should allow transformation values of the IBL sphere, but it doesn't seem to be working . . .