>That's actually by design.

Then the design is simply wrong. No program, of any kind, should destroy data without warning and with no reasonable expection that this would happen. I know of no other program where data is destroyed simply by renaming an object.

>In VFP the child class does only know the name of the method, nothing else. There's no ID telling a method what method it is. And the parent class has no link to the child class, only the child class a link to the parent class.

Right, I understand this. What I expected to happen was the the child class method would remain in the child class under the original name. The fact that this doesn't happen is a design bug.

Naturally, I don't expect VFP to locate all subclasses (which may be in another country!) and change the method name.