Effective date on copy

[jean]

The recent Plone hotfix announcement had an effective date of November 2012 in the RSS feed:

  <item rdf:about="https://plone.org/products/plone/security/advisories/20150910-announcement">
    <title>Security vulnerability: 20150910 - Multiple vectors</title>
    <link>https://plone.org/products/plone/security/advisories/20150910-announcement</link>
    <description>Patches to Zope and Plone for a variety of
issues.</description>

    <dc:publisher>No publisher</dc:publisher>
    <dc:creator></dc:creator>
    <dc:rights></dc:rights>
    <dc:date>2012-11-06T00:00:00Z</dc:date>
    <dc:type>News Item</dc:type>
  </item>

This is https://plone.org/products/plone/security/advisories/all-advisories/RSS
linked from https://plone.org/products/plone/security/advisories/

@tkimnguyen confirms that this item was created as a copy of an existing item. From a content manager's perspective, I think that a copy should normally have the date default to the time of the copy.