Feed import: iTunes category not being imported

For instance: at this feed, on tag
itunes:category

  <item>
    <title>PHY 24 Lecture 7 (May 21, 2007)</title>
    <description>Course - Group - PHY 24 Lecture 7 (May 21, 2007) - Stanford &gt; Modern Theoretical Physics (Spring 2007) &gt; PHY 24 Lecture 7 (May 21, 2007)</description>
    <itunes:summary>Course - Group - PHY 24 Lecture 7 (May 21, 2007) - Stanford &gt; Modern Theoretical Physics (Spring 2007) &gt; PHY 24 Lecture 7 (May 21, 2007)</itunes:summary>
    <itunes:image href="http://deimos3.apple.com/indigo//68/97/12/7b/6897127b647ec09fc9bb4f628d2ccb0bcca1be136be815692d0a0152343e93a4-1292076906.png"></itunes:image>
    <enclosure length="351380937" type="video/mp4" url="http://deimos3.apple.com/WebObjects/Core.woa/FeedEnclosure/itunes.stanford.edu-dz.4331554097.04331554099.4331554126/enclosure.mp4"></enclosure>
    <guid isPermaLink="false">1379724783</guid>
    <pubDate>Tue, 02 Oct 2007 22:17:47 GMT</pubDate>
    <itunes:author>Leonard Susskind</itunes:author>
    <itunes:duration>1:41:32</itunes:duration> 
    <itunes:category text="Science">
        <itunes:category text="Physics"/>
    </itunes:category>
    <category>Science</category>
    <itunes:provider>Stanford</itunes:provider>
    <itunes:block>no</itunes:block>
    <itunes:order>6</itunes:order>
  </item>

Of course, this is not the itunesU tag

 <itunesu:category itunesu:code="XXXXXX" />

but we could use importing from existing itunes:category or even <category> tags in feeds.