Yet to come across duplicates issue at my end, Engine prime should not make duplicates. Say I transfer a crate from EP containing 10 tracks to a flash drive. Then I add 5 more new tracks to same crate on Ep, when I drag that crate to my flash drive , the 5 tracks are added.
But I will lose any data I may have set on those 10 tracks when using the players . Engine prime will revert to the main collection data status.
You lost your hot cues at this point.
Probably hot cues you set whilst mixing on the players or ones transferred from other dj software
Going forward, use the Sync Manager to manage your information.
But I’m not aware of any way to automatically spot and add new information in either direction. ie bidirectional sync using most recent changes automatically
You have to do it manually
Once you start sync manager,
Sync changes from USB stick to EP Collection (if your most recent changes were made on the hardware),
or
From Collection to USB (this is what you should have done)
Maybe you can start a feature request for An option for Intelligent Bidirectional Sync Manager that uses the most recent information to keep user data such as hot cues, grids etc up to date
