This will work on a windows master with clients >=6.5.2:
for /F %i in ('bpplclients ^| gawk "{print $NF}"') do bpgetconfig -e %i %i
gawk is part of the unix utilities for windows, you could also build a for-construct for this if you like - but gawk makes it easier. This will create a file named like the client, containing the clients excludes.
The "new" bpgetconfig and bpsetconfig allows you to set the exclude list on nearly the same way:
http://seer.entsupport.symantec.com/docs/316533.htm
--------------- OK, the stuff above just works for unix+linux -------------------
for /F %i in ('bpplclients ^| gawk "{print $NF}"') do bpgetconfig -M %i -x Exclude
does work for Windows.