For the past several weeks I've been cleaning up my music library on my phone. I have around 3,000 songs on my SD card and I went through about 900 songs that had no tagging and album art and edited the files through PowerAmp to give them Titles, Albums, Art, Etc...Everything is beautifully tagged, pictured, and genre'd. However when I created a complete backup of the phone, I browsed the backed up music files and sure enough, All the editing that was done to the files did not stick. So I have 900 Unknown Unknowns again atleast with the backup...Reason it pissed me off is eventually I'm going to want to expand on storage and would like to just run a backup restore on the new card and not have to go through all that again. Am I missing something, Or is music file editing merely aesthetic if you will.. I had to take a couple shots of patron when I realized all that work was potentially for nothing.. I'm at witts end.