[OSM-newbies] Editing Changeset XML

[Bob Hawkins]

Users are presented with the option to 'Provide a brief comment for the changes you are uploading:' when uploading data to OSM from JOSM.  A previous comment is still in place when uploading the next piece of data in the same session.  It is very easy to overlook the previous comment or type an error in the new comment.  I can see the comment in the Changeset XML, but am unable to amend it.  Is there a means by which the comment can be amended? 
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