WCF: how to generate a single WSDL document, without WSDL:import?

I'm troubling into an issue... I'm trying to find a way to generate a single wsdl document from my WCF service, i.e. without any link to external documents. I've used FlatWsdl to remove all xsd:import links, bou my generated wsdl still contains a link to an external wsdl document via a wsdl:import declaration:

<wsdl:import namespace="http://myurl/mynamespace"  
             location="http://myserver/myservice.svc?wsdl=wsdl0"/>  

This document actually contains all inlined xsd schemas, so... there's a way to inline also this external wsdl document, in order to have a single wsdl?

Thanks a lot for any kind of help.