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In EXPORT mode, open the preferences and change this:

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Hi there,
having issue since a while because rekordbox doesn't sync properly with my USB sticks.
It happens very often that if a import a playlist and the I would like to remove it I've to format the entire USB stick because some of the tracks gonna stay there even if I've removed it through rekordbox.
Any tip on how to solve this?
In EXPORT mode, open the preferences and change this:

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i'm pretty sure that updating your device won't remove deleted tracks, I'd like this to be an option.