Modification Logs view does not display request controls, if sent to the server

Although it is probably a more general defect, here is the scenario where I figured it out.
If a server supports the Tree Delete control (OID 1.2.840.113556.1.4.805), Studio deletes subtrees of entries with the help of it, which is quite nice.
Unfortunately, the Modification Logs view does not display in the LDIF that the controls has been used. It only shows the deletion of the parent entry of the tree, like

#!RESULT OK
#!CONNECTION ldap://degas:389
#!DATE 2007-12-09T20:02:45.359
dn: ou=parent,dc=TIVOLIDS,dc=DEGAS
changetype: delete

In order to replay the file in the logs, inclusion of the control is required, like

dn: ou=parent,dc=TIVOLIDS,dc=DEGAS
control: 1.2.840.113556.1.4.805 true
changetype: delete

See RFC 2849 (http://www.faqs.org/rfcs/rfc2849.html) for details.