I used to watch this show too. Its pretty simple explanation as to why we don't remember this intro. The earlier intro was far more memorable, and I'm sure we all gave up on this show by season 7. Really 7 Seasons?
You only saw this theme song if you watched season 7 during its original run in 1994. The syndication package only goes through mid season 5. And the makers of the DVD set had the sense to leave out this version of the song.