User cannot undo adding/removing a constraint from a constraint profile

User can not undo the adding of a constraint to a constraint profile.

You can undo to the point the creation of the profile

1. Compile and open the editor
2. Open a new level
3. Locate SK_Mannequin_PhysicsAsset and open Phat by double clicking it
4. Open the physics asset window from Window dropdown
5. Add 2 constraint profiles by clicking the plus icon
6. Click the constraints button in the toolbar
7. Click on one of the constraints and press CTRL A to select all
8. Click the profiles button at the top of the screen and switch to New
9. Click Add to current profile in the details panel
10. Press Ctrl + Z
    Result
    The profiles are not removed from current profile and Ctrl+Z does nothing.