Removing xsi:type attribute

Hi,

I am mapping to a schema provided by one of our customers using BizTalk 2006 R2.  This schema contains an <Equivalent> node due to existence of a complex type (CurrentAddressDetails) based on another complex type (CommonAddressDetails).  The output from the mapping works fine but I am having problems when submitting the output to the customer.

The problem is that BizTalk outputs an xsi:type attribute for the <Equivalent> node to indicate which complex type it has used to map it.  Unfortunately, the customer’s validation does not accept xsi:type attributes.

Is there a way of suppressing output of the attribute?

Many thanks

Bash