I have seen where many people are having issues after restoring system data using titanium. Please do not restore system data with titanium. This is not just a pet peeve of mine but you can go over to the titanium backup wiki and the FAQ states
Generally when the dev of the program you are using says if you do this and is screws up I am not going to help you, you should avoid doing that. If you are going to act tech savvy enough to flash custom roms then you should be willing to set up your custom settings, otherwise you are already in too deep.
If you want to restore things like your messages then try to follow the dev's instructions
Please note that if you backup and restore all system settings across very different ROMs, you are on your own. Before restoring on a different ROM, it is strongly recommended to enable the "System data migration" option in the Titanium Backup settings.
Generally when the dev of the program you are using says if you do this and is screws up I am not going to help you, you should avoid doing that. If you are going to act tech savvy enough to flash custom roms then you should be willing to set up your custom settings, otherwise you are already in too deep.
If you want to restore things like your messages then try to follow the dev's instructions
To restore your SMS/MMS, call logs, phone book, and the like: Tap the