Comment 4 for bug 372427

Commit http://bazaar.launchpad.net/~commonsmachinery/inkscape/cm-metadata/revision/12392 contains a fix for this. (That branch contains some other changes too, though, but the commit itself is clean.)

This came out of a discusson on cc-devel, where it was defined that tools should only check licenses for equality based on the URI, not the properties: http://lists.ibiblio.org/pipermail/cc-devel/2013-June/001849.html

Best practice is probably not to include the <cc:License> section at all, but the code keeps backward compatible support for it and reconciles any differences with a preference for the cc:license property.