Hasta La Motion!

Hi, I was wondering if there should be any differences between just a standard single frame rendered image in maya and a batch rendered image.

Basically I have been having trouble rendering shadows off of maya fluids, in this instance fire. If I render a single frame from the maya viewport I can see the shadows are all present and correct, but as soon as I go to batch render it the shadows disappear. A secondary difference is the glow on the flames is much stronger on the batch rendered version.

As far as I know the render setup is sync’d to both ways of rendering and therefore should emmit the same result. Am I doing something wrong?