translating clip Alpha Channel settings

FCPX stores a clip's alpha channel setting in metadata, and by default this piece of important information is not exported into FCPXML.

Bring up the Inspector and click on the Info tab. From the metadata view menu in the lower-left, either edit an existing setting or save an existing setting as a new one. Choose Edit Metadata View and then enable "Alpha Handling". Now, when you export using this modified setting, FCPX includes alpha channel settings that Automatic Duck FCPXML Import can bring into After Effects.

This movie demonstrates how to either create a new metadata view or modify an existing one.