I use Photoshop 7, but I think this works the same in 6…
Using “select” menu, go to “load selection”
Under “channel:” make sure it’s set to “transparency” (of the layer with your object ie:lower 1/3)
Click OK (under window menu, check “channels” to make sure you have an alpha channel)
Using “select” menu, go to “save selection”
Under “channel:” – set to “new” and give name of “Alpha” or “Alpha 1” (photoshop allows for multiple channels, so I use “Alpha 1” to prevent my own confusion)
Do a “save as” (I use tiff for format) and make sure the “Alpha Channels” is selected
Import into Avid (under “options”, check “invert existing” (alpha)) and click OK
Avid should import with alpha channel
I know there are faster ways, but this is the one I use
HTH,
Randy