I was successful exporting from Sweet Home 3D to Unreal Engine by using Unreal Engine 5.4.4 with the Datasmith Twinmotion Content for Unreal Engine plugin via Twinmotion 2023.2.3. It seems that you need to use the latest versions of Twinmotion and Unreal Engine together and then you don't need the ...

I have the same problem. I exported my project as obj and opened it in Twinmotion (2023.2.3), which went well. I then saved it as a datasmith file and imported it in unreal engine (5.5.3) but none of the textures go through. Geometry seems fine.

I think the issue is between Twinmotion and unreal ...