Attempts to reshape a NURBS surface so
            its actual shape resembles its trimmed shape.
         
         
            - Choose Surface Edit > Trim > Trim Convert  
 .
             
            - Click a four-sided trimmed surface.
               
                  NoteThe Trim
                        convert tool does its best job to match the shape of
                     the trimmed surface with an untrimmed surface. In most cases, an
                     exact match will be impossible.
                  
                
               
                  TipTurn on the Show
                        Edge Deviations and Show Surface Deviations options
                     to attach deviation locators to the resulting surface to see how
                     much the new surface differs from the original.