Does TitaniumBackup work for backup during "Unified Storage Upgrade"?

[therob]

By chance I found an old topic which is related to the backup question:

@humorkritik

I did this:

• Updated to 1.6;
• applied unified storage update,
• restored from Titanium Backup (Pro).
  When restoring, I used the Prefer XML option, and first restored all apps with data,
  then all system data (because of some other problem).
  …
  Curious enough, I had to restore all my contacts etc. via the standard Backup & Restore app, because they seemed not to have been restored via Titanium Backup.

@humorkritik:

• could you figure out, why your contacts could not be restored?
• What you mean with “etc.”?
• Could you summarize your experience with TitaniumBackup with the FP (during Updates/StorageUpgrade/Factory reset etc.?) for the community?