Shadow copy in c# wpf is not copying my c++ dlls (unmanaged code)

Question

I have an application in wpf c# which uses c++ dlls also. When I try to update this application using AppDomain and setting ShadowCopyFiles to true, it creates a cache folder and my application launches from there. However it does not copy my c++ dlls (unmanaged code) and the application access them from the original bin folder. Because of the same I am not able to update my c++ dlls. A similar question already exists Shadow Copying, and mixed C# and C++ DLLs loading from arbitrary folders but I didn't find any suitable answer.