How to correct the exclusion list for Time Machine backup? Music is not listed for exclusion, but is excluded I'm running OS X El Capitan 10.11.6 and have noticed the Music folder is not listed for exclusion. However, this folder is not actually backed up, as I can see this by going into the backup disk, it is not there. 



This is confirmed by looking at the exclusion list which has Music there for some reason:



Any idea what went wrong? A bug? Or the exclusion list somehow inherited this from previous settings of the Time Machine I must have had in the past, I may have excluded Music some years ago? Is it possible to rectify this?
These are not the files from the exclusion list but files that have been directly marked as excluded in their extended attributes.

For example:

$ xattr "/Users/foo/Music/iTunes/Album Artwork/Cache"
com.apple.metadata:com_apple_backup_excludeItem


Most of these seem to be logs, caches or indexes that can be rebuilt.