Uninstalling bos.sysmgt.nim.master fails

Trying to uninstall the fileset bos.sysmgt.nim.master on a NIM master fails with the following messages:

# installp -u bos.sysmgt.nim.master
+-----------------------------------------------------------------------------+
                    Pre-deinstall Verification...
+-----------------------------------------------------------------------------+
Verifying selections...done
Verifying requisites...done
Results...

FAILURES
--------
  Filesets listed in this section failed pre-deinstall verification
  and will not be removed.

  Non-Deinstallable Filesets
  --------------------------
  The following filesets were selected for deinstallation.  Deinstallability
  checks indicate that they should not be removed from the system.

    bos.sysmgt.nim.master                   

  << End of Failure Section >>

FILESET STATISTICS
------------------
    1  Selected to be deinstalled, of which:
        1  FAILED pre-deinstall verification
  ----
    0  Total to be deinstalled

Pre-installation Failure/Warning Summary
----------------------------------------
Name                      Level           Pre-installation Failure/Warning
-------------------------------------------------------------------------------
bos.sysmgt.nim.master                     Failed pre-deinstallation check

#

As long as the NIM master is configured, the bos.sysmgt.nim.master fileset cannot be removed. However, the NIM master can easily be unconfigured by calling the script /usr/lpp/bos.sysmgt/nim/methods/m_unconfig with the argument “master“:

# /usr/lpp/bos.sysmgt/nim/methods/m_unconfig master
0513-044 The nimesis Subsystem was requested to stop.
0513-004 The Subsystem or Group, nimd, is currently inoperative.
0513-004 The Subsystem or Group, nimsh, is currently inoperative.
0513-083 Subsystem has been Deleted.
0513-083 Subsystem has been Deleted.
0518-307 odmdelete: 5 objects deleted.
0518-307 odmdelete: 39 objects deleted.
#

Afterwards, the fileset bos.sysmgt.nim.master can be removed:

# installp -u bos.sysmgt.nim.master
+-----------------------------------------------------------------------------+
                    Pre-deinstall Verification...
+-----------------------------------------------------------------------------+
Verifying selections...done
Verifying requisites...done
Results...

SUCCESSES
---------
  Filesets listed in this section passed pre-deinstall verification
  and will be removed.

  Selected Filesets
  -----------------
  bos.sysmgt.nim.master 7.2.5.203             # Network Install Manager - Ma...

  << End of Success Section >>

FILESET STATISTICS
------------------
    1  Selected to be deinstalled, of which:
        1  Passed pre-deinstall verification
  ----
    1  Total to be deinstalled

+-----------------------------------------------------------------------------+
                           Deinstalling Software...
+-----------------------------------------------------------------------------+

installp: DEINSTALLING software for:
        bos.sysmgt.nim.master 7.2.5.203

Finished processing all filesets.  (Total time:  12 secs).

+-----------------------------------------------------------------------------+
                                Summaries:
+-----------------------------------------------------------------------------+

Installation Summary
--------------------
Name                        Level           Part        Event       Result
-------------------------------------------------------------------------------
bos.sysmgt.nim.master       7.2.5.203       USR         DEINSTALL   SUCCESS   
#