[news.eclipse.tools.emf] generated ecore file in impl directory

[Will Horn <will.horn@xxxxxxxxx>]

I split out some of my model (schema based) into two separate 
models/packages: a base model A and another model B that references A. 
Everything seems to work as expected except that in the impl directory 
for model B, I am now getting a generated ecore file.  It seems to be 
the same as my b.ecore, except that for types defined in A it uses the 
namespace instead of a relative path.  For example it will have

<eStructuralFeatures xsi:type="ecore:EAttribute" name="note" 
eType="ecore:EDataType http://www.example.com/a#//Text1024";>

whereas b.ecore would just have

<eStructuralFeatures xsi:type="ecore:EAttribute" name="note" 
eType="ecore:EDataType ../../com.example.a/model/a.ecore#//Text1024">

It's not a big deal, but I am wondering what the purpose of this 
generated ecore file is.  If I delete it, is is still regenerated.  Is 
it because of some genmodel setting I have inadvertently triggered?

Thanks,
Will