Modify > Delete with subclasses
This feature is available from the Modify Menu for classes. It can be used to delete the selected class together with all its subclasses.
Caution
The operation is limited to the current asset collection, which means that when a class already has instances in other asset collections, those will remain in those collections and likely become typeless “orphans”.
See Also
Further Reading on Ontologies
Further Reading on Modify Menu
Further Reading on TopBraid