Because the house that was used for the exteriors of Villa Villekulla had been sold and the garden taken out, filmmakers had to use a model for any full exterior shots.
Hans Alfredson (who played Konrad the Peddler in this film) and his "Hasseåtage" comedy troupe partner Tage Danielsson were originally slated to play the policemen Kling and Klang in the Pippi Långstrump (1969) TV series.
Mr. Nilsson (Pippi's monkey) and Lilla Gubben (Pippi's horse) were supposed to appear throughout the film, but had to be written out of most of the plot, as the animals were reportedly hard to handle on set, and had to be drugged to keep them under control.
This theatrical feature film was the denouement of the Pippi Långstrump (1969) TV & movie series starring Inger Nilsson.
The only film in the Pippi Långstrump (1969) TV series to not be based on any of the three Pippi books written by Astrid Lindgren, who wrote this story exclusively as a film. She did, however, write a book adaptation of the movie after the fact. The book adaptation is still available, even in English.