Using DataTable.WriteXML After Row Deletion

I am attempting to write an XML file from a datatable using DataTable.WriteXML(stream). WriteXML works perfectly fine after I have some insert/update functions that adds or updates the datatable. However, I am trying to delete from the datatable afterwards and then use WriteXML again. It continues writing XML after the closing DocumentElement. Oddly enough, I appear to successfully delete from the actual datatable. The delete (partial code) is as follows:

            DataRow[] rows = table.Select(whereString);

            for (int i = rows.Count()-1; i >= 0; i--) 
            {
                rows[i].Delete();
            }
            table.AcceptChanges();

Iterating all the rows in the table and using Console.WriteLine shows that I have the correct data in the datatable after deletion. However, when I use DataTable.WriteXML(), I get an output where the DocumentElement is closed but the XML file continues:

(partial XML output)

    <ipaddress />
  </XmlData>
</DocumentElement>name>test1</name>
    <hostname>test2</hostname>

(continued...)

I would expect the output .XML file to stop after the closing DocumentElement tag but it doesn't.

The code for printing is not unusual:

string filename = "test.xml";
using (Stream stream = new FileStream(filename, FileMode.OpenOrCreate, FileAccess.Write))
{
    myDataTable.WriteXml(stream);
}

Does anyone know what I did wrong here? Using Remove() on the datarow results in the same thing.