Unlike the previous two scripts which have a lot of deviations from their respective films, this script resembles the final film much more closely and doesn't appear to have any deleted scenes or such. In particular, the previous Saurus Rock script was a "first draft" script, whereas this one is a "revised draft".
With the previous script, I remember noticing the lack of songs. Here, while the songs weren't fully written yet, they were starting to figure that out. Three different points on the script are marked where a song is suggested and briefly described, which ended up being the three songs used in the final film ("The Legend of the Lone Dinosaur", "Bad Luck", "On Your Own").
It's been a few years now since I last saw LBT 6, but from what I remember of it, this script (aside from the incomplete song notes) seems pretty much exactly the same as the film. I do wonder if there are any differences, even if they're just minor things such as slightly different dialogue. Sometime in the future, I may do a more thorough analysis on this.