Hi.. I'm facing a problem with the my music collection on iTunes so please bear with me for a second and I hope you guys could help me solve this issue.

I try to refresh back my all music collection (from all sorts of location from the download , music , and ext hard disk) by putting it in one folder so that it will be easy for me to manage it next time.. In the process its obviously I have to delete the playlist on iTunes and put a new one when I have change location of the file.

After new list has been loading I noticed all my hardwork of putting the album artwork and song information (album, artist, year) has gone. Its like all the changes I've made since are not being replaced to the music file itself but it just saved within the iTunes like a cache.. Any opinion regarding this is kindly appreciate.. Thanks