Ubuntu Multimedia :: Amarok Wont Update Tags For Files In Collection

I have most of my music on my hard drive in one big "Music" folder, and in Amarok this is seen as the collection. Everything is imported, works fine.

Until i change the ID3 tags of a file/album. Amarok refuses to load the new tags, and keeps displaying the old tags.

I have over 200 GB of music in that folder, some of it is badly tagged. When i realize that, i retag the files with Musicbrainz. And unless i scan the entire collection again, the new tags wont be loaded. Needless to say i can't listen to the respective album/file for hours, as the rescanning of that whole folder takes at least one hour.