Unity to Unreal

Hi Every one !
I want to know if there is any way to export a world in unity to unreal engine (if it change anything, the world is made with Gaïa)
Thanks !

No, you would need to recreate it in Unreal–reason is, each engine has a way of handling stuff like terrain, for it to run well you need to use those tools because it ends up with a lot of data and those systems are there to improve performance. You would need to get a heighmap of your terrain and then export your assets like the foliage meshes and textures and import those to UE4 and use the landscape tools in UE4 to rebuild it.