UIKit状态保存不恢复滚动偏移

I have an app that is using UIKit state preservation in iOS 6. I am able to save/restore the state of the view controllers, ie which tab is selected and navigation controller hierarchy, however I cannot get my table view to restore it's offset. I have a restoration identifier in my storyboard for the view as well as the view controller and the view controller (the table's data source) implements I have an app that is using UIKit state preserv