The final dance between Belle and the Prince is actually reused animation from the finale dance between Princess Aurora and Prince Phillip in Sleeping Beauty. 30 Things You Might Not Know About “Beauty And The Beast
The ~wonderful world~ of Disney is actually kinda crazy. Animators recycled animation from Sleeping Beauty in the final dance scene of Beauty and the Beast in order to save time and money.
Side-By-Side Examples Of How Disney Recycled Animation In Later Films - Neatorama