Moving XML file not deleting original

[John Yale]

I am using an XmlDocument to save some data. Periodically I add new data
and save the XmlDocument to a file:

Me.fXmlDoc.Save(Me.fFilename)

When I have added all the data I need, I want to move the file to a new
location which I do by saving the file to the new location, and then
deleting the old one:

Me.fXmlDoc.Save(newFilePath)
File.Delete(Me.fFilename)
Me.fFilename = newFilePath

However I often end up with two copies of the file, one in each location.
I suspect that what is happening is that the last few saves have not
actually made it to the disk by the time I do the Delete, and the file
gets recreated later.

Originally I was moving the original file:

Me.fXmlDoc.Save(Me.fFilename)
File.Move(Me.fFilename, newFilepath)
Me.fFilename = newFilePath

This gives the same problem, and the file in the original location
contains more data, the one in the new location is missing the last few
entries.

Is there a way to flush the data to disk, or is there a better way to do
this?

Thanks

John