If you are talking about the dinosaur film from 2000, other than the name change not much else about the attraction changed much.
Absolutely untrue.
First and foremost, the reality is that the ride was influenced by the movie in the first place. Rhode himself has confirmed on several occasions that the subject of the ride being finding an Iguanadon and the ride's villain being a Carnotaurs were influenced by their knowledge of the film (only in the original ride, this iganuadon was not explicitly Aldar).
Even still, when they made the explicit change over, the ride changed a lot. These changes were not simply cosmetic or simple insertions of the film's main character, there were fundamental changes made to the ride's story, tone, and movement. Why did they do this? Well because Michael Eisner was obsessed with the movie Dinosaur and was
sure it was going to be a massive hit so he wanted the ride to be more welcoming to families who loved the film.
(The film flopped. Families did not love it.)
The original ride's story placed a lot more emphasis on the impending meteor strike. In DINOSAUR, it's still a component but the story was reconfigured to focus more instead on the carno chasing you as it was the villain dino of the film. They changed the ride's finale to accommodate this, removing the meteor strike and replacing it with a final attack by the carno.
The ride's narration was changed as well. Since the ride featured no music, they used Seeker's narration to set the tone. In DINOSAUR, the tone was softened a great deal from the original ride to make a less dark and foreboding experience.
The movement profile of the EMV was softened very noticeably. It was a lot rougher on opening than when it came out of refurb as DINOSAUR, and this was done to make the ride more appealing to families, along with the tone softening of introduction of Aladar into the story. The movement profile was softened so much that the ride's height requirement was lowered by a whole
six inches.
Show lighting was added to give light to scenes that previously took place in the dark, and scenes that previously already had it had their lights brightened. Strobe effects were also reduced.
The sound of the dinosaurs was also changed to make the threat feel lower. For example, in the original ride, the EMV would traverse in the dark as the sound of the carno's footsteps pounded right next to you. In DINOSAUR, this scene was given light, and the carno's footsteps were made to fade out as if you were losing it and it was falling behind, removing the immediate danger from the scenario.
Not only was the ride designed with IP synergy in mind, when they did actually make the full change over to full on iP integration (not even 4 whole years after the ride's opening), they did indeed make massive changes to the original ride to fulfill this aim.