Searching in the Impacted Elements list also searches in the sub-elements of the classifiers, making it easy to find specific elements.
If a diagram itself has changed it is also listed in the Impacted Elements since it is also regarded as a changed element. But it will never have child elements in the Impacted Elements list.
The grouping in the Impacted Diagrams groups the elements that are visible on the diagram as child elements of the diagram. →
→ Changed elements are visible as child element of the diagram if they are visible on the diagram.
→ Elements can appear more than one time in the Impacted Diagrams List if it is visible on multiple diagrams.