Version 1.3 was pushed to the Marketplace. The plugin now supports Material Data import. See #1](RuntimeMeshImportExport - Import and Export runtime created static meshes using Assimp library - Marketplace - Unreal Engine Forums) and #2](RuntimeMeshImportExport - Import and Export runtime created static meshes using Assimp library - #2 by Rumbleball - Marketplace - Unreal Engine Forums)