Exporting NULL values from MS Access 2007 with the command Application.ExportXML

When I use the command Application.ExportXML to export a query in MS Access (2007), the NULL value fields are not exported.
Not even as blank tags (<nullvaluetag></nullvaluetag>

Am I not able to specify or do something to get tags generated also for fields with NULL values?
I am exporting database changes to another system. Hence changes from a existing value to a NULL value is not exported!!
JoarAsked:
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clarkscottCommented:
You will probably have to build a query that include an alternative to a null.

iif(not isnull([YourField]), [YourField],"")     if text
iif(not isnull([YourField]), [YourField],0)     if number

Every possible field would have to include this function.
You can access an Access Query just like an Access table from the 'outside' world.
Scott C
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JoarAuthor Commented:
I have already solved it with a nz(fieldname).
But this forced me to change the output field name and hence had to go trough another query to come back to the correct field name (the output field names could not change):

Query 1: XMLFieldX: nz(XMLField)
Query 2: XMLField: XMLFieldX

Heavy when you have a lot of fields...
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clarkscottCommented:
Create a query that opens your first query and change the names back again.
Scott C
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JoarAuthor Commented:
That was what I did....
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clarkscottCommented:
sorry.. I see that in your previous comment..
Scott C
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JoarAuthor Commented:
It did function, but I was hoping of a more nice way of handling the problem
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