Prb with version param in module attribute

Hi

we have a ATL attributed project -a DLL library . This contains
a lot of ATL objects with IDispatch support.
We will public a next version of the library, also we change
version number in the library block from 1.0 to 2.0.

//MyLib.cpp
[ module (dll,name="MyLib",version="2.0", ....)]
class MyLibModule;

//ComObjA.h
[ object,dual, ....] __interface IA : IDispatch{ ... };

[ coclass, ....] class CComObjA : public IA
{
....
    BEGIN_COM_MAP(CComObjA)
        COM_INTERFACE_ENTRY(IA);
        COM_INTERFACE_ENTRY(IDispatch);
         ....
    END_COM_MAP()
};

After change the version number we can still compile all the sources but
support
for scripting clients goes broken ;-(((

After analyse the prb a have found that the compiler does make the prb by
insert line

public IDispatchImpl<CComObjA>

into merged code(ComObjA.mrg.h).
!! Default value for wMajor param is 1 !! - Injected code is bad.

Know anybody a bether workaround as insert

public IDispatchImpl<CComObjA, IID,LIBID ,2>

for each COM class ?

Regards,
Hermann