Instancing in UE4

Hello
I have a 3dsMax scene with many objects that will be instanced.
I am assuming these instances do not carry over into UE4
Questions
Is a duplicated object in UE4 the same as an instanced object in terms of memory in 3DSMax?
Is duplicating the best method?
Is it best to do my layout of instanced objects in UE4 or is there someway to have it carry over from 3dsMax.
thanks