The film had over 10 hours of left over footage and drawings.
In Naruto: Shippuden (2007) there is a episode called ROAD to SAKURA (2012) which has Sakura from the universe in Road To Ninja transported to Naruto (2002)/Naruto Shippuden universe, and the episode is takes place within the time frame of Road to Ninja - Naruto the Movie (2012) which explains Naruto and Sakura's absence in the Naruto/Naruto Shippuden universe.
This anime film is located chronologically after the episode of Kisame to iu otoko (2012) and before the episode of Shi e izanu tenshi (2012) from Naruto: Shippuden (2007).