Importing content

For generated organic surfaces, persistent shading seams or gray/default meshes after LOD reimport, read organic surfaces and material sections. It covers the section-to-slot mapping that component overrides alone cannot prove.

Most "it looks wrong in Unreal" problems are import-settings problems. Know the Interchange framework's data flow, the settings that change geometry and shading, and how assets store their import provenance so reimport stays predictable.