Reimporting .fbx with Interchange Pipeline

Hi. I’m trying to figure out reimporting with interchange pipeline. How should I reimport a staticmesh from .fbx with interchange pipeline to override materials and textures?
I don’t know why the materials and textures were not recreated after reimporting the staticmesh;
I modified the source code of enigne to show some properties about materials and textures which were hidden on the reimport interchange dialog. Then I ticked ‘Import Materials’ and ‘Import Textures’ when I reimported. But it doesn’t work!!! The materials and textures were not recreated.
I tried using UInterchangeMaterialInstanceFactoryNode.SetEnable(true) and UInterchangeMaterialInstanceFactoryNode.ForceNodeReimport() and it doesn’t work either!!!
What should I do?