If your hierarchy display does not match the display in Smart 3D, check the RelationshipMapping.txt file selected when you opened the .vue file. The delivered RelationshipMapping.txt file helps in creating relationships for displaying the Assembly and System Breakdown Structure hierarchies from Smart 3D .vue/.xml files. If you edited any of the parent-child relationships in a custom RelationshipMapping.txt file, the hierarchy display changes when viewed in Smart Review.
Delete the database (.mdb and .mdb2) files associated with the .vue file you are using. Re-open the .vue file using the default RelationshipMapping.txt file, which contains all the Smart 3D relationships in the default order. Smart Review re-creates the database files with the relationship information.