Dreamweaver creates a new document
based on the template specified in the XML file. It fills in the
contents of each editable region in that document using the data
from the XML file. The resulting document appears in a new Document window.

If your XML file isn’t set up exactly the way Dreamweaver expects,
you might not be able to import your data. One solution to this
problem is to export a dummy XML file from Dreamweaver,
so that you’ll have an XML file with exactly the right structure.
Then copy the data from your original XML file into the exported
XML file. The result is an XML file with the correct structure that
contains the appropriate data, ready to be imported.