When you delete the shape edit element (point, split line or support line), the elements adjusts its geometry accordingly. 
To delete shape edit elements 
- Select the modified element. 
  
 
- Click Modify | <elements> tab
Shape Editing panel
Modify Sub Elements. 
   
- Click on the shape edit element to select it. 
  
 
- Press 
	 Delete. 
	 
Note: If you delete a split line or a support line, its start and end points remain visible, and fold lines may still display.