I have only used Blender in UE3 to preview how textures would align. I would export a model out of UModel and then import it into Blender only to preview textures. I never imported a model back into the game for UE3 or UE4, so I'm afraid I can't help you with this.
It's my hope to eventually learn how to import 3D models into BnS and make a tutorial available for everyone, as I know there are a few people wanting to learn how to do it. It would also be great if anyone got it done before me and I will never understand why people keep resources to themselves when it comes to modding.
I do understand the inconvenience to some people of being bombarded with questions and troubleshooting but I rather they put they don't wish to be bothered and still get some sort of tutorial out there as a starting point.
