I think maybe there’s a disconnect here. If I understand you, you want to create one split track file that can be used for two different purposes – to review on Frame.io by your producer and then to also be downloaded and used by your editor to edit with.
Oliver and I have stated that if you upload a split track file directly to the frame.io website you will then be able to do what you’ve requested.
If you’re saying that you can’t have a file that’s split track after exporting that split track file out of FCPX and uploading it directly to Frame.io then the problem lies solely with FCPX.
But I’m also wondering why you’re spending so much energy on something so simple. Even if you didn’t use the extension, uploading split track files to the frame.io site directly is still easy peasy.
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