Not sure how to explain this and I don't have the time tonight to make screenshots etc... but
I have generated streets by importing a shp-file, manually setting the attributes of the segments and assigning the 'complete streets 2015' rule. The rule doesn't quite work as I thought it would but I haven't read/looked for a manual (yet).
Next to this, I have converted some blocks into static elements and subdivided them by hand. The result looks ok in CE in wireframe but somehow I don't have the impression that the faces are really separated - maybe they are still grouped or so.
Anyhow, proof and pudding and stuff ... so I exported the scene to fbx but nothing shows up.
Maybe it is the CE 2015 Trial license or the combination of actions or a bad workflow ... can anyone share some quick thoughts before I elaborate?