Do you know if it’s now possible to export clips without re-encoding with Adobe’s Media Encoder or Apple’s Compressor and keep timecode?
Yes. Load the clip in to Compressor. Select any preset (like a ProRes preset) and apply it to the movie. Mark an in and out, select the Video tab and select “Video Passthrough”, move to the audio tab, and choose “Audio Passthrough”, Name the output, and start the batch. This will very quickly create a new file that is bound to the ins and outs you set in the Compressor interface.