If you're talking about system apps, they shouldn't be backed up / restored. It can be done, but you shouldn't restore data, and it can still be problematic.Has anyone had the problem where when you restore your apps and data using Titanium Backup the notifications dont come through? It seems like when I do a restore of my apps I dont get notifications anymore. I have to uninstall the app and reinstall it.
If you're talking about system apps, they shouldn't be backed up / restored. It can be done, but you shouldn't restore data, and it can still be problematic.