problems with Readxml Writexml in a dataset

[John George]

I am writing the file correctly and it gives me the right xml file
When I read it back, I am missing one element in the last row, it sets
it to the initial value before I saved the origional file? Any ideas?
Thanks,
I am loading the xml file with this code;

Dim myFileStream As New System.IO.FileS tream _
(filename, System.IO.FileM ode.Create)
' Create an XmlTextWriter with the fileStream.
Dim myXmlWriter As New System.Xml.XmlT extWriter _
(myFileStream, System.Text.Enc oding.Unicode)
' Write to the file with the WriteXml method.
thisDataSet.Wri teXml(myXmlWrit er)
'for some reason the xml is skipping a Severity value
' RichTextBox1.Te xt = myXmlWriter.Wri teRaw
myXmlWriter.Clo se()
myFileStream.Cl ose()

I am reading the xml file back with this code;

' Create new FileStream to read schema with.
Dim fsReadXml As New System.IO.FileS tream _
(xmlAd, System.IO.FileM ode.Open)
' Create an XmlTextReader to read the file.
Dim myXmlReader As New System.Xml.XmlT extReader(fsRea dXml)
' Read the XML document into the DataSet.
datasetRM.ReadX ml(myXmlReader)
'datasetRM.Read Xml(xmlAd)

myXmlReader.Clo se()
fsReadXml.Close ()