It hasn't been used in any shows, but it's used on the Roddenberry Archive site.you remember correctly, but it has never been used so far. The bit in this episode was a reuse from chain of command.
All her audio was cut from TNG episodes.in the end of the episode, when they leave the Enterprise D, there is the voice of the computer, which is Majel Barrett voice. Did they cut & paste her voice to fit the words?