I've just finished V1 of a Blender Import/Export tool that supports Skyrim LE & SE and Fallout 4. Yes, you can import from SE and export to LE and it just works.
https://github.com/B...yNifly/releases
- Supports FO4, Skyrim LE, Skyrim SE. Import from one game and export to another with minimal twiddling (bone weights, partitions, shape keys).
- Handles tris and base mesh in one step. No need to separate UV seams or triangulate before exporting
- Handles expression and chargen tri files for Skyrim and FO4
- Import tris into an existing mesh or on their own
- Supports Bodyslide tri files on import and export for body morphs
- Handles multiple bodyweights in one step. Export _0 and _1 armor weights for Skyrim from a single mesh.
- Handles Skyrim and FO4 partitions and also FO4 segments
- Handles skinned and unskinned meshes correctly. Exports head parts to SE correctly.
- Handles shaders correctly. Set them up in Blender and export.
- Import-and-forget. What you import will behave correctly on export without fiddling.