FBXImportAsset Data is lost on project restart when changing any Build Settings

After importing a Static Mesh, if you alter any build settings and apply changes, on the next opening of the Project you will not be able to reimport the asset changed. You will have to retarget the location of the FBX and reinput all import settings.

This is a regression of behavior in 4.8.2.

Also test via Github: ue4 4.9 github branch, commit 8f66c95f1d88ed4560258e35851a9974a48c6581

1. Open QAGameEditor
2. Import any StaticMesh
3. Open the Mesh in the Static Mesh Editor
4. Adjust any setting under Build Settings
5. Apply the Build Changes
6. Save the Mesh
7. Restart QAGame
8. Right Click and try to reimport the asset

RESULTS: You are asked for the asset's location. If you look in Property Matrix, the asset is no longer listed as an FBXAsset.

EXPECTED: On Reimport Asset, it should happen automatically since we have already established import settings for the mesh.

FBX-imported assets' AssetImportData does not properly load in 4.9