Validation of msg with mixed empty and non-empty namespace elements. XML Schema 1.1.

[elgrego76]

Hi there

I have a solution which used to work (XML Schema 1.0), now it is
broken (XML Schema 1.1) and I need help.
It doesn't permit imports without namespace attribute anymore. To
spare you the details of the current solution I simplified my request.
I need a validation schema for the following msg layout:

<f:foo xmlns:f="urn:test:foo" >
<bar>1</bar>
</f:foo>

or

<f:foo xmlns:f="urn:test:foo" >
<fighters>1</fighters>
</f:foo>

Limitation: the choice fighters and foo (having empty namespace) come
from seperate exisiting schemas (business standard schemas with no
targetNamespace element) and should be included or imported somehow.

I've tried for a couple of hours now already with no success. But the
msgs look so plain simple.
How can that be so hard to find?

All help is appreciated.

Thanks,
Grego