I wish it were so simple. I don’t think I’ve ever used “export” in AE. only the render queue…
Using RGB+alpha. have tried 24 and 32bits (though 24 bit supports an alpha channel. shouldn’t make a difference.)
I exported a quicktime movie in which the alpha channel worked… but i prefer working with frames. My 3D and higher end software has no problem with this.
When I bring the targas into photoshop, sure enough, there is no alpha channel in the channels list.