Import transparency channel animation from maya

Hello all

I just started evaluating unity recently for porting my game from another platform and I've met some limitations. My game assets are created in maya. They are setup in a lambert material, have the diffuse channel mapped to a texture and a anim curve for the transparency channel.

To make things clearer, here is a image:

Is there a solution to import the transparency channel data from maya and map the channel information to the asset's material alpha channel in unity?