No quite true.  I recall seeing something a while back that allows you to 
re-use the license. You need to do the following. 

1) make a list of you current license as they will be need later. 
2) Stop networker first
3) nsradmin -d "F:\Program Files\Legato\nsr\res\nsrdb"
   . type: NSR license
   delete
4) start Networker
5) than put back in the license keys. 

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