UMLR — Clarify ownership vs. membership for NamedElements

"A namespace may also import NamedElements from other Namespaces, in which case these, along with the ownedMembers, are members of the importing Namespace."

A sentence clarifying ownership vs. membership for NamedElements would be useful. As far as I can tell, every NamedElement is owned by the Namespace in which it was created, but is a member of both its owning Namespace and every Namespace into which it has been successfully imported.

(However, where a NamedElement is a PackageableElement, importing it creates an ElementImport which becomes a member of the Namespace instead, to allow for the possibility of aliasing of the PackageableElement's name.)