After meshing, if a new object is scoped to the geometry, the associations to the mesh may not match (see Figure 68: Protecting Topology). In this case, the new object is added to the list of protected topologies, but you may or may not want to re-mesh because the associations may be fine. For example, if you scope a control to one of the side faces of the box, the associated mesh will be fine. However, if you select one of the triangular faces, the associated mesh may be problematic.
You can set the Topology Checking control in the Advanced group to control the re-meshing behavior. By default, Topology Checking is set to Yes, which forces a re-mesh.
If Topology Checking is set to Yes (default), the mesh goes out-of-date, because the state manager must revalidate that all scoped topology is associated properly as protected topology. If you then attempt to re-mesh, the software runs the topology checks and ensures all protected topology is respected. If the topology checks are successful, the mesh is validated but not re-meshed. If the topology checks are unsuccessful, the software re-meshes the geometry, treating the newly scoped objects as protected topology.
If Topology Checking is set to No, the software does not check to ensure that the mesh is associated to the topology properly, so you must validate the associations manually if you have concerns.