ClassicTVMan1981X
Screenwriter
Not quite sure what you mean here, but I assure you that the originally syndicated episodes through much, if not all, of the seventies were the same as that broadcast by NBC including the 3rd season bumpers with William Shatner and Leonard Nimoy reminding viewers that the episode will continue after the station break and to stay tuned for scenes from next week's episode. Nothing was changed including the opening credits.
The original Where No Man Has Gone Before (not a TV movie) had a completely different theme. The aired Where No Man, Man Trap, Charlie X, Mudd's Women... all used the same theme music. It was the narration (or lack thereof) that made the versions different.
Here's the comment from John80220 (in the link above) that is mystifying me...
Now, I already know about the slightly different version of the audio recording of Shatner's narration (on the episode in question, it's the speedy version without the pause between "These are the voyages..." and "Its five-year mission," but it's what he says about the music from the unsold version of Where No Man Has Gone Before that has me scratching my head about this...This is the opening version with the titles re-dubbed when the show was remastered for video in 1982. The original 1966 NBC version used Shatner's voiceover, but with the opening music from the second Star Trek pilot, "Where No Man Has Gone Before" (the cadence Shatner uses in reading the lines is also slightly different than it would be for the later Season 1 shows.
~Ben