FilteringClassLoader missing between ear and war classloaders (10.3)

Hi,
When deploying an ear application, and viewing it's class loader hierarchy by using the CAT tool, I can see the following:
- On a 12.1 WebLogic server, the hierarchy is : FilteringClassLoader (this contains the filters declared with <prefer-application-packages>) --> GenericClassLoader --> FilteringClassLoader --> ChangeAwareClassLoader
- On a 10.3 WebLogic server, It's almost the same: FilteringClassLoader (this contains the filters declared with <prefer-application-packages>) --> GenericClassLoader --> ChangeAwareClassLoader
The FilteringClassLoader between the app class loader and the web class loader is missing.
Is this a known difference between 12.1 and 10.3?
Is there any way i can define the filters at this level or make sure a FilteringClassLoader is created (like it is in 12.1)?
Thanks a lot in advance,
Talya

Alright, my research points to the idea that this might have something to do with staging. Since this is a dev setup we don't have any managed servers or anything. All we have is AdminServer and that is it. We have only one domain and it is "base_domain". Does anyone know if this is wrong?

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FilteringClassLoader missing between ear and war classloaders (10.3)

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