Live Upgrade - problem with ludelete

A few weeks ago I was trying to do Live Upgrade from Solaris 10 11/06 to 8/07. It went quite well until I decided to delete the old BE:

bash-3.00# uname -a
SunOS mickey 5.10 Generic_127112-07 i86pc i386 i86pc
bash-3.00# cat /etc/release
                        Solaris 10 8/07 s10x_u4wos_12b X86
           Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                            Assembled 16 August 2007
bash-3.00# lustatus
Boot Environment           Is       Active Active    Can    Copy
Name                       Complete Now    On Reboot Delete Status
-------------------------- -------- ------ --------- ------ ----------
11-06                      yes      no     no        yes    -
8-07                       yes      yes    yes       no     -
bash-3.00# ludelete 11-06
The boot environment <11-06> contains the GRUB menu.
Attempting to relocate the GRUB menu.
/usr/sbin/ludelete: lulib_relocate_grub_slice: not found
ERROR: Cannot relocate the GRUB menu in boot environment <11-06>.
ERROR: Cannot delete boot environment <11-06>.
Unable to delete boot environment.

The only one useful solution was at http://tech.groups.yahoo.com/group/solarisx86/message/44111
Juergen Keil proposed to use lulib from OpenSolaris. Because I didn't have any DVD with OpenSolaris, asked Juergen for copy of lulib and he sent me one. After replacing the original:

bash-3.00# lustatus
Boot Environment           Is       Active Active    Can    Copy
Name                       Complete Now    On Reboot Delete Status
-------------------------- -------- ------ --------- ------ ----------
11-06                      yes      no     no        yes    -
8-07                       yes      yes    yes       no     -
bash-3.00# ludelete 11-06
Determining the devices to be marked free.
Updating boot environment configuration database.
Updating boot environment description database on all BEs.
Updating all boot environment configuration databases.
Updating GRUB menu default setting
Boot environment <11-06> deleted.
bash-3.00# lustatus
Boot Environment           Is       Active Active    Can    Copy
Name                       Complete Now    On Reboot Delete Status
-------------------------- -------- ------ --------- ------ ----------
8-07                       yes      yes    yes       no     -

Thanks Juergen !