Does the xmbean configuration defined in the xml-attribute xmbean-dd of the element mbean overwrite an xml-element xmbean that is included in the mbean-xml-element?

<mbean [....] xmbean-dd="configuration file">

 <xmbean>
 <description>Local configuration</description>
 [..]
 <xmbean>

 [..]
</mbean>

-> does the xmbean-dd "configuration file" overwrite the "Local configuration" xmbean?

Is there documentation for this?
Thanks, Tobias.