Importing a skeletal mesh with scaling will give bad lighting result on post import LODs

1. Import a skeletal mesh (the attach file) with some uniform scaling (I use 10.0) in the import options dialog
2. Open the skeletal mesh editor
3. Import the same mesh as LOD 1

RESULT
The LOD 1 will have bad light shade result

EXPECTED
The LOD 1 should have the same light shade result