I think that if you click twice on clips with alpha just after put them on the timeline, alpha layers are not locked yet. It become locked since you try to step in it. And after did it, they can't be unlocked again. So, you can use match frame and overwrite your clip, click twice and apply all the effects you want directly on both channels, cause they'll be unlocked. Hope my poor English had been clear enough. ;-)
I think that if you click twice on clips with alpha just after put them on the timeline, alpha layers are not locked yet. It become locked since you try to step in it. And after did it, they can't be unlocked again. So, you can use match frame and overwrite your clip, click twice and apply all the effects you want directly on both channels, cause they'll be unlocked. Hope my poor English had been clear enough. ;-)
Thanks that was really helpful. Got me out of a jam.
Thank you so much.