abstract animation + maya render help needed

[omegamista]

I'm using maya 8.5
rendering in mentalray draft mode.

I have objects with alpha maps that also fade to being completely transparent. I did this by having the shader's transparency controlled by the maya blend utility. color one is the alpha map, and color two is completely black (for completely transparent).

When i render each frame manually they come out as expected. But when using batch render, the blendcolor utilities don't seem to work because the transparency for all objects stays the same as it was at frame 1.

below are pictures of the sequences, The first is what i want, the second is what batch render gives me.





Please help me with this as soon as you can. Thanks