"How to restore iPhone from back up: I accident deleted a bridge from my Hue app. I will loose tons of configured scenes and related data for three rooms in my home. Can I restore just the data from one app? If not, how do I restore my iPhone?"
-------
Recovering Data from a Backup Restoration:
If this data was local stored on your iPhone in a backup, then restring it frame a backup (not to Factory Settings), all would show up as it was at the time of backup. Note that this backup must be of the same iOS version as what is currently installed, as downgrading the iOS is not an option, as of this reply.