I think I found some evidence about how far did production make it

Fraidy Cat began production in 2004, under the direction of Musker and Clements with Andreas Deja, Harald Siepermann and Hans Bacher handling character and background designs. The initial storyreel was presented in May of that year and although many of the animators were impressed with it, David Stainton would not agree to release the movie. This was because he did not think that it would be able to be marketed to a general audience, on account of average people, especially children were not well-versed in Hitchcock's films.