Convert UE4 map to UE3

Hi I was wandering if there is a way to make a map in UE4 and then somehow use it in a game made with UE3?
Thanks for ansewering!

there is a button to export the setup of the level well its more like export all the meshes of the level in their positions. i dont think it would be possible to export anything with code though, even more the case with anything bp oriented since ue4 is so much different when it comes to code. ive never tried it though and i didnt work with udk so i wouldnt know for sure if any of it is compatable.