Import mapping for XML file with DTD reference

Hello,

I have created an import mapping for an xml file that validates with an xsd.

The xml file however contains a reference to an external dtd: <!DOCTYPE CD931B SYSTEM "CD931B_20080701.dtd">

If i import the file with that line in the document i receive an error. It also seems that i can only use .xsd for import mapping. Is there any way to solve this (besides manually removing the 1 row)? I would very much like to be able to use the xml file 'as is' meaning including the reference to the external dtd.

Regards,

Chris