Bulk prefab saving script has unexpected results

I find myself doing a lot of prefab modifications in the scene and to save myself time of hitting the Apply button on prefabs all the time I've written a short script to bulk save all the prefabs I have selected:

Code (CSharp):

1. [MenuItem("Save selected prefabs")]
2.     static void SaveSelectedPrefabs()
3.     {
4.         var prefabs = new List<GameObject>(Selection.gameObjects);
5.  
6.         foreach (var prefab in prefabs) {
7.             var prefabMods = PrefabUtility.GetPropertyModifications(prefab);
8.             var prefabParent = PrefabUtility.GetPrefabParent(prefab);
9.             PrefabUtility.SetPropertyModifications(prefabParent, prefabMods);
10.         }
11.  
12.         AssetDatabase.SaveAssets();
13.         AssetDatabase.Refresh();
14.  
15.         Debug.Log(prefabs.Count + " prefabs saved.");
16.     }

This all appears to work - The prefabMods contains all the modifications and I can see the prefab file has been updated with the list of modifications. But the weird part here is that the prefab file has not got its actual data update but a 'modifications' list at the bottom of the file is populated:

Code (text):

1. Prefab:
2.   m_ObjectHideFlags: 1
3.   serializedVersion: 2
4.   m_Modification:
5.     m_TransformParent: {fileID: 0}
6.     m_Modifications:
7.     - target: {fileID: 400000}
8.       propertyPath: m_LocalPosition.x
9.       value: -11.3400002
10.       objectReference: {fileID: 0}
11.     - target: {fileID: 400000}
12.       propertyPath: m_LocalPosition.y
13.       value: 0
14.       objectReference: {fileID: 0}
15. etc...

If I delete the in-scene prefabs and pull them back out again from the prefab assets, none of the modifications have stuck.

Ideas?

 

try this instead:
(sorry for any typo's but tested the code on one computer and replying on a different one )
foreach(GameObject gobj in Selection.gameObjects)
{
var original = Prefabutility.GetPrefabParent(gobj);
PrefabUtility.replacePrefab(gobj, original);
}

 

For anyone looking for this solution for 2018:

Code (CSharp):

1.    
2. // shortcut Shift+Ctrl+Alt+S
3. [MenuItem("Tools/AxonGenesis/Utilities/Save Selected Prefabs %#&s", false, 153)]
4. static public void SavePrefabs() {
5.     foreach(GameObject obj in Selection.gameObjects) {
6.         var original = PrefabUtility.GetCorrespondingObjectFromSource(obj);
7.         PrefabUtility.ReplacePrefab(obj, original);
8.     }
9. }
10.