Remove Target Class

The Remove Target Class command, accessed on the right-click context menu when editing the schema, removes the selected class from the set of valid target classes for the given relation for the class( and all of its subclasses). When a target class is removed from a relation, the complementary relation is automatically updated to keep the relation specification consistent (although complementary relations with no target classes are not automatically removed from a class as this may be undesirable)

 

To remove a target class, you must remove it from the class in which it is specified (as opposed to attempting to remove an inherited relation from a subclass).