Open Radar

 
Summary:
When editing a Core Data mapping model (.xcmappingmodel) using Xcode 5.0.2, trying to reorder the Entity Mappings in the list on the left side of the editor via drag and drop does not work. Selecting an entity mapping and then trying to drag it results in the selection in the list of Entity Mappings changing to reflect the current mouse location.

Reordering the entity mappings via drag-and-drop worked in Xcode 4.6.3.

Steps to Reproduce:
1. Install Xcode 5.0.2.
2. Open or create a Core Data project.
3. Create a Core Data model with more than one entity.
3. Create a new version of the Core Data model (Editor/Add Model Version...).
4. Add a Core Data mapping model (New/File/Core Data/Mapping Model) to map from one version of the model to the next.
5. Select the mapping model (.xcmappingmodel).
6. Attempt to reorder the Entity Mappings in the list via drag-and-drop.

Expected Results:
Order of Entity Mappings can be changed via drag-and-drop.

Actual Results:
Order of Entity Mappings cannot be changed via drag-and-drop (selecting and dragging has no effect).

Version:
Xcode Version 5.0.2 (5A3005)

Notes:
Duplicate of <rdar://15626353>.

Configuration:
MacBookPro8,2
Occurs on OS X 10.8 and 10.9 using Xcode 5.0.2
Does not occur on OS X 10.8 using Xcode 4.6.3