Is it possible to "un-combine" meshes once imported?

I imported a scene from Maya (houses, streets, lamp posts etc) , the scene was made up of many objects, but once imported into UE4 it comes in as one big mesh/object. Is there any way to un-merge this mesh. I know you can uncheck combine meshes check box during the import process, but I was wondering if it is possible to un-combine meshes once they are imported as one mesh.

@ I haven’t seen that as a feature in the Engine, but there are mesh plug ins that may have the ability. You can always render the material invisible, but then that wont disable collision.