Lost all app data and former backups after iTunes 11 update
I just updated to iTunes 11. I'm using Windows 8 Pro x64 and an Apple iPhone 5 32GB. Before the update I made a backup of my iPhone.
So far, so good.
Problems that occured after the update:
1. One Music CD in my library was split into two albums with titles 1-4 and 5-13. I fixed that manually.
2. Available space on my iPhone decreased after the update. I've got an iPhone 5 with 32GB capacity. Before the update and sync with iTunes 11 I had like almost 5GB of empty space. Now it's only 1.31GB. There are not more apps, music, pictures etc. on my iPhone than before the update.
3. All data of apps like balance (budget tool), Momento (diary) is gone! Apps like Dropbox lost their settings.
Hence, I decided to restore the data from the backup I made just before updating to iTunes 11. THIS BACKUP IS GONE!! I'm no IT newbie and I'm an iPhone user since the iPhone 3.
I just wish I would have not updated to iTunes 11. Apple Switzerland's Support was not able to help. They said if the backup is gone, data is lost ;(
iPhone 5, Other OS, Windows 8 Pro x64