XSD include problem

In gml and other complex schemas if an element specified with a ref="referredName" attribute, the referenced element is often found in an XSD file that is included later. This condition passes validation but codeGen throws an error when faced with this construction.

I clipped out and attached a simplified example of this behavior starting with the gml schema. schemaTest.xsd is the root schema, schemaA.xsd contains a reference to the element metaDataProperties which is defined in schemaB.xsd

When I run codegen I get the following:

codegenTest:
[echo] Running code generation from schema
[delete] Deleting directory .... /codegen/test/src
[java] Fatal: Referenced element 'metaDataProperty' is not defined for element at (line 7, col 76, in
file:///.../codegen/test/schemaA.xsd)
[java] Terminating due to errors in input schemas