There is a utility for this thats been posted here before. It takes all the objects in your scene and exports them out to UE4. One object at a time it moves them to 0,0,0 and exports them to their original co-ordinates.
I have not tried it out yet (plan to very soon) but the youtube video’s look like it works. cant remember the name right now, but some searching this site will find it.
one of the nice things is that each object will have its pivot point (local 0,0,0) where it should be instead of way off somewhere else. Grossly offset pivot points will make it hard to to do LOD’s and good physics.
what Darthviper was saying about creating pre-fabs would be a great feature we need badly.