Converting maps?

I play Americas army Proving grounds i think they use U4 but i have some maps that were in the Americas army 2 which i think used U3 im trying to convert a map that was in americas army 2 .aao file and convert it over to Proving grounds which are .umap files. is this possible.

Is this possible to open Unreal Classic Harry Potter 1 PC in UDK/UE4?

Neither of those are possible or legal