Ya, ur source material is in the XDCAM codec.
When you change the sequence settings to ProRes and render – u r then working in the Prorez codec.
Can u recapture straight to prores? That would be the best choice.
Can you send all the clip thru compressor and batch convert to prores b/4 bringing back into FCP – that would be the next best choice.
If you only change the sequence settings and render – everytime you make an edit – it will become unrendered. If your edit is all done, then this won’t matter so much.
Chris Tompkins
Video Atlanta