tagsoup breaks good xml

Cleaning an xml file I have obtained unexpected results: tagsoup has orphaned some properties closing the parent tag too soon. It also downcases the parent tag's name.

Before tagsoup:

<Objects>
    <Object>
      <ObjectID>240</ObjectID>
      [...]
      <Status>Not Ready</Status>
      <Title>Some description which includes word/word, 22,000</Title>
      <Url>http://ift.tt/1wDs0ae;
      [...]
      <Owner>
        <Name>JOHN MARSHALL, MR</Name>
      </Owner>
    </Object>
    <Object>
      <ObjectID>122</ObjectID>
      [...]

After tagsoup:

<Objects>
    <object>
      <ObjectID>240</ObjectID>
      [...]
      <Status>Not Ready</Status>
    </object>
    <Title>Some description which includes word/word, 22,000</Title>
    <Url>http://ift.tt/1wDs0ae;
    [...]
    <Owner>
        <Name>JOHN MARSHALL, MR</Name>
    </Owner>
    <object>
      <ObjectID>122</ObjectID>
      [...]

I'm in a java project that uses this libraries:

import org.ccil.cowan.tagsoup.Parser;
import org.ccil.cowan.tagsoup.XMLWriter;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

I'm using Java 6.

Any clues? The desired output of a valid xml file would be the same file (maybe just changing details, but not the structure), wouldn't it?