During the credits, Anne and Oakely are reading about the Collector (a.k.a. Lawrence III) and his flying fortress that appeared in "Pokemon: the Movie 2000"
This is the first Pokemon movie where the Pokemon are given genders and referred as such by the characters.
For the English release of the film, the first five minutes were cut out and replaced with the same intro that had been used in Pokémon 4Ever (2001). The cut material showed the story from the book that Annie and Oakley were reading, entitled "Legends of the Heroes of Altomare". The story goes of how two children, who were really Latios and Latias in disguise, rescued Altomare long ago, and have been its guardians ever since.
For the English dub's home video release an intense blue palette was added to film making the colors look darker than the original.
Latios had a different voice in the original. The dub producers opted to have him share Latias's voice instead.
This was the last Pokemon film to receive a commercial theatrical release in the United States until Pokémon the Movie: White - Victini and Zekrom (2011), eight years later.
Nintendo's largest domestic box office flop, raking in less than $750,000 in the United States. However, it should be pointed out it was only released in 200 theaters. Internationally, it earned a reasonable gross of around $20 million.