You can just export meshes/skeletal meshes and animations from blender to the UE4. The lighting and the mist (Particle System) has to be done in the UE4.
Probably you have activated “selected objects” in the export settings 
You can just export meshes/skeletal meshes and animations from blender to the UE4. The lighting and the mist (Particle System) has to be done in the UE4.
Probably you have activated “selected objects” in the export settings