Is this only happening for this mesh you import or is it any other mesh including the ones that are in the engine folder? Looking at 4.10.1 and 4.11 P1 I’m not seeing this on my end. If this is the case would you mind posting a screen shot?
All the options are available under the Build Settings in my Static Mesh Editor.
If it’s happening with a particular mesh, would you be willing to share this mesh that reproduces the issue?