XML & Excel 2010 - Why can't I export my changes?

Hello All,
I'm new to the forum, so please bear with me.

I have the following attached XML file and created the following attached .XSD through excel. My question is why can't I export my changes? And what can I do so that I can modify my changes?

I mainly want to be able to change all of the Flag attributes from "TRUE" to "FALSE" and vice versa if needed. I used the following module to create the .xsd file. Is this wrong?

Sub Create_XSD2()
   Dim StrMyXml As String, MyMap As XmlMap
   Dim StrMySchema As String
   ' Book.xml is the file created in section one of this topic.
   StrMyXml = "C:\BULK_CHANGES.xml"

   ' Turn off async loading.
   Application.DisplayAlerts = False
   ' Add the string to the XmlMaps collection.
   Set MyMap = ThisWorkbook.XmlMaps.Add(StrMyXml)
   Application.DisplayAlerts = True

   ' Create an empty file and output the schema.
   StrMySchema = ThisWorkbook.XmlMaps(1).Schemas(1).XML
   Open "C:\BULK_CHANGES.xsd" For Output As #1
   Print #1, StrMySchema
   Close #1
End Sub

I am able to import my data just fine and it looks great. But I can't really use it if I cant change my data. Please help!