Correct way to replace bmake?

[Steven Sartorius <ssartor%bellatlantic.net@localhost>]

I currently have pkgsrc installed on an old G5 iMac running OS X  
10.5.5.  Running pkg_chk tonight I noticed that there's a new version  
of bmake available -- bmake-20081111 (i have  bmake-20080215nb1  
installed now).  Going to devel/bmake I start the build process:

/<2>usr/pkgsrc/devel/bmake# sudo bmake update clean clean-depends
===> Deinstalling for bmake-20081111
Running /usr/pkg/sbin/pkg_delete -K /var/db/pkg -r bmake-20080215nb1
Package `bmake-20080215nb1' is marked as not for deletion

and, sure enough, after a couple of minutes the build dies with:

=> Unwrapping files-to-be-installed.
===> Installing for bmake-20081111
ERROR: bmake-20080215nb1 is already installed - perhaps an older  
version?
ERROR: If so, you may use either of:
ERROR:     - "pkg_delete bmake-20080215nb1" and "/usr/pkg/bin/bmake  
reinstall"
ERROR:       to upgrade properly
ERROR:     - "/usr/pkg/bin/bmake update" to rebuild the package and all
ERROR:       of its dependencies
ERROR:     - "/usr/pkg/bin/bmake replace" to replace only the package  
without
ERROR:       re-linking dependencies, risking various problems.
*** Error code 1

Stop.
bmake: stopped in /net/shuttle/usr/pkgsrc/devel/bmake
*** Error code 1

So -- how do I upgrade/update bmake?  Will 'bmake replace' do the  
trick?  I'm a little hesitant to try 'cause I don't want to brick my  
setup!

Any help much appreciated...

Steve