Using basic capabilities > Overview of using basic capabilities > Diagrams > Using the Explorer diagram > Delete unrelated objects
  
Delete unrelated objects
An Edit menu and a right‑click diagram menu entry is available on the Explorer diagram that reads:
Delete Unrelated Objects
System Architect will delete any objects that are not related from the Explorer diagram. For example, if a symbol is not connected to another symbol it will be deleted from the diagram.
See also
Using the Explorer diagram