Sur la piste de l'Oregon

The script called for an Indian attack on a wagon train, but producer Walt Disney told second-unit director Yakima Canutt that he didn't want it to be a typical Indian attack, as children would be watching the film and he didn't want them to see anyone killed or injured. Canutt objected, saying that in real life people were killed during Indian attacks and one in which no one gets hurt was so unrealistic that it shouldn't be filmed at all. Disney overruled his objection and told Canutt to shoot the attack as ordered. After screening the finished sequence, however, Disney told Canutt that he had been right and the attack looked too phony and unrealistic and ordered it to be re-shot in a more realistic manner. Canutt said that it would add at least a week's extra time and several hundred thousand dollars to the budget, but Disney told him to re-shoot for as long as he needed in order to get it right.

Edited into Disneyland: Along the Oregon Trail (1956)