The data isn't selected where the role exists or doesn't exist or contains, etc.
The patch that I added to 505202 should address some of the problems. Not all filter combinations would work though.
Marked as a duplicate of http://drupal.org/node/505202
Correcting issue status, see #2125263: Issue status not taken from last comment during D7 migration.
Comments
Comment #1
nkmaniThe patch that I added to 505202 should address some of the problems. Not all filter combinations would work though.
Comment #2
nkmaniMarked as a duplicate of http://drupal.org/node/505202