Content-Type name field invalid

I've seen a few posts on this but it appears this is something people wanted. Example:

Content-Type: application/xml; name=attachment.xml

However, it is not valid to have this name field appear in an ebXML SOAP message.

SOAP-UI 4.0.0 produces Content-Type: application/xml; name=attachment.xml
SOAP-UI 3.0.1 produces Content-Type: application/xml

Please can we have 3.0.1 functionality restored or at least make this additional field optional?