Nah its not possible if you run the latest EF version.
However you could install the old version where the "moscow" map was unchanged, copy the map files. Deleate the old EF version, install the new EF version - paste the old moscow map files into the ww2/data/scenarios/mp folder (might even rename the old moscow to moscow2 so you would have 2 moscow maps)
I dont know if that would work out and i dont recommend it either, but seems possible... Theres a reason why the map changed - it sucked.