REKORDBOX DJ 4.1 UPDATE ERASED CUES, COLOR, AND SONGS INFO

Same issue i lost everything that if you planning on updating don't do it

i think i found the cause... can you check the folder name where you have all you music.. in my case.. rekorbox modify the name of the folder and that why it cant find any song, cues, etc...   check the music path before re-importing everything...  hope this work...  :)

This is why it's important to do a data backup of the Library (not Library + audio tracks) within Rekordbox prior to updating. Then after you update, you can simply load the backup. It has saved my ass many times with Rekordbox and production-related apps in general.