I noticed that when I used the duplicate finder to remove duplicates, or used the orphan track finder to delete tracks I don't ever use, it doesn't actually remove it from the rekordbox collection, or the 'All Tracks' tab (on rekordbox). It stays there, and all that happens is that an exclamation mark pops up, which means the file is 'missing' (because I deleted it). Is this a bug, or is this just a limitation with the software (not being able to remove the deleted track from 'All Tracks' on rekordbox)?