Final Cut Studio. Yes, I was trying all things, including putting into a new sequence for export. I was trying to export to ProRes from DVCProHD. Found that if I exported as "current settings" meaning DVCProHD then transcoded in Compressor it works ok, but not straight out of a timeline with the section selected; it never exports the whole clip! Have a workaround now, still curious though.
BTW, I have somewhat of a potpourri (my own doing) of Codecs in the timeline, thus am going to Color in several steps.