i recently upgraded my ios to 6.1.4. during the upgrade it completely wiped all my data and so i did a restore which worked fine. but now i cannot add any new music to my iphone. when i do sync music it appears to work and the memory indicator on itunes actually decreases like its supposed to. when i disconnect and go to the music app on my phone the new songs are just not there only the songs from when i did a restore from backup. i have 3gb of memory available so its not that i dont have any memory left. please help.