Exporting SpeedGrade Project with Embedded Alpha Channel

Hello! I am currently writing with a problem I can't seem to find a solution for in SpeedGrade. My problem is that I imported footage with embedded alpha channel enabling me to chroma-key out a green screen. I would like to export this file now with the alpha channel still embeded to be delivered to Premiere. Is this possible?
Your help is greatly appreciated!
Philip

Thanks Fran,
I'm using uncopressed QT, animation.
I did the color correction on a grading track and I think that's what killed the alpha, because when I selected the track with the footage the alpha was being read properly. So what I did instead is I saved a .look file and imported it in After Effects, I rendered from there.
Can you have the grading track read the alpha from the original footage or if not can you copy the attributes from one track to another, as if I was moving all the grading from the grading track to the footage tiself instead of having to do it again from scratch?
Thanks again,
David.

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