I don't know if any YouTube video is a "new restoration" or an update of this first one I came across ..
Classic Cartoons - blog (Thursday, July 17, 2008) - The Return of Sunflower
http://classiccartoons.blogspot.com/2008/07/return-of-sunflower.html
It looks like there are a number of sources for pre-1969/censored Disney's Fantasia footage:
* an original 16mm print of the 1958 Disneyland TV show entitled Magic And Music, which aired The Pastoral sequence of Fantasia, along with 2 other musical Disney cartoons
http://disney.wikia.com/wiki/Magic_and_Music
* an original 16mm print of the 1974 "educational short" of edited segments from that same Disneyland TV show (I don't know if The Pastoral sequence is here complete)
http://disney.wikia.com/wiki/Magic_and_Music_%28short%29
* a taping (probably now a transferred-from-tape DVD) of a 1980's The Disney Channel rebroadcast of that same TV episode
http://disney.wikia.com/wiki/Disneyland_%28TV_series%29
But that's not the important part! Even Sunflower is miffed .. .. that she gets all the glory of being a racially-discriminated-against centaurette by Corporate Disney political-correctness liberalism, while Otika gets quietly wiped from existence with none being the wiser!
WHERE IS OTIKA'S FIVE MINUTES OF FAME? Well, glad you asked ..
The Disney Wiki - Sunflower
http://disney.wikia.com/wiki/Sunflower
The Disney Wiki - Otika
http://disney.wikia.com/wiki/Otika
;)