When a property definition of a class is modified or removed, you can choose to propagate the changed properties immediately or at a later time. Property definitions that are added are automatically inherited by the subclasses.
If you postponed the propagation of changed properties to a later time, you can use the Propagate Metadata Changes window to perform this task. The Propagate Metadata Changes window lists the custom properties of the class and its superclasses. From that list, you can select the properties that you want propagated to subclasses.
To propagate metadata changes to subclasses: