It looks like the vray blend material hierarchy does not display properly in the track view editor. when expanding the hierarchy you only get an entry for the directx manager and mental ray custom attribute.
as a work around you can instance your material out to other material slots and edit those if you have animation applied to any of your channels.
V Miller
as a work around you can instance your material out to other material slots and edit those if you have animation applied to any of your channels.
V Miller
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