When a 3D solid model is imported into ArtiosCAD, by default the accessible points are those that determine the bounding box when the item is selected.
By default, under Options > Snap Options, Snap to cartons check box is checked and the Snap to solids check box is cleared. If the user wants to use any tool by which he needs to select points, only the points on the bounding box are selectable.
If the user wants finer control, the Snap to solids check box can be set. If set, the selectable points become those that comprise the vertices/edges of the polygonal mesh.
These are the points that are accessible even if the view mode (View > View mode) is set to Solid.