Morph targets aren't imported with Import Animations Disabled

Morph targets don't appear on initial import of fbx with Import Animations Disabled

Regression: YES
Worked: 3249277 (4.14.3)
Broken: 3299760 (4.15.0)

1. Create a blank test project (no prior import settings)
2. Import the attached fbx (Enable "Import Morph Targets", ensure "Import Animations" is disabled)
3. Open the Skeletal Mesh and the Morph Targets panel

Result: Nor Morph targets imported
Expected: One Morph target is imported