Denon DJ Engine Prime 1.3.1 Release Notes Last Updated May 7, 2019 New Features: Rekordbox software collections can now be imported into Engine Prime. Bug Fixes and Improvements: Improved the import and update time for Serato, Traktor and iTunes libraries. Fixed an issue where some tracks were not imported from external collections. Fixed an issue where some tracks were not packed to external drives if duplicate files exist across multiple locations. Fixed tracks not auto-analyzing when imported as Crate/Playlist from iTunes. Fixed an issue where in certain circumstances, Engine Prime’s Serato collection would show less tracks than Serato’s collection. Fixed an issue where a drive could not be ejected during track analysis. Misc improvements.