While editor age is public, full dates aren't supposed to be. We should either purge them from the dump and include age, or just purge them and keep nothing.
The age isn't stored anywhere (we just calculate it from the date), so it would have to be the latter.
In review with http://codereview.musicbrainz.org/r/2081/
Moving to 2012-08-20 release as we are now in freeze for 2012-08-06.