I’m not sure it’s exactly the same but I’m experiencing similar problems.
When I export animations from Boris RED it looses it’s alpha properties. So neither in the file preview or the imported clip in FCP do I keep the alpha. Serious problems here. Oddly enough, I,ve experience these things only after I went from trial version of Red to official version. Go figure.
Technical info : Power Mac 2×3.2gh Quad Core Intel
memory : 2Go 800MHz DDR2 FB-DIMM
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It’all an illusion