Hello!
Create a project in Vectorworks then transfer it via Datasmith export.
Open the Unreal Engine and import the Datasmith project, then set the materials in Unreal Gloss Bump etc..
If I now make changes in Vectorworks and create the project again via Datasmith export and then in Unreal import the file geometry and material it overwrites all preset materials!!!!!!
It should not recreate the preset materials and only create the new geometry and material objects.
However, if you import into Unreal with Geometry only, the preset materials remain as they should be, but for new geometry from Vectorworks, it only creates a blank geometry!
Also work with the Cinema 4D export there it behaves so if you have created a project you set in Cinema the materials then you make changes in Vectorworks and export it again in Cinema export update now you select only geometry and it automatically creates new geometries and textures that were newly created in Vectorworks and leaves the old materials as they were!
Translated with DeepL