Xalan-J, Xerces-J XInclude question

Hello,

I am using Xalan-J with Xerces-J to transform XML to XML. I am using
Xerces-J with the Xinclude parser configuration. Xinclude is working
fine but my problem is that after the complete XSL transformation I get
xml:base attributes in the target/transformed file. For example:

<elementName xml:base="../source/catalog1.xml"/>

Now I have to check my result against a foreign DTD. The DTD does not
allow the xml:base attributes and I am not permitted to modify the DTD.
Is there a possibility to omit Xerces-J to include xml:base attributes
if Xinclude is used?

Regards
Oliver Paulus