How to prevent that XML attributes ares automatically

Hello

I am doing some changes in (a lot of) XML documents with XSL (using Apache Ant
1.6.5 target named <xslt .../>)
The -simple - purpose is to delete / add  / modify some attributes.

Basically, it works.

Except one thing : in some cases, it adds some attributes to some XML
elements.
I guess that this happens in order that the final XML become compliant with
the DTD specified in the top of the source XML file.
If I delete the DTD directive, no attributes are added.

Here above is an example of the added attributes :

<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN"
"http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport ...isFloatColumnFooter="false" whenResourceMissingType="Null"
isIgnorePagination="false">
...
</jasperReport>

The point is that I do not want these attributes to be added - for the
moment.
Any idea how to unactivate this ?

Jirtme Haguet
Stratigies - France