In ArcGIS Online, you are able to duplicate selected sketch layer features. You are also able to create a new sketch layer from selected features. Neither of these functions are available in the Portal version of the (new) map viewer. The sketch layer documentation for 11.2 indicates as much. These would be very helpful functions to bring over to the Portal (new) map viewer. Without them, you are stuck recreating and reconfiguring identical features if you need more than 1 of a kind. This is quite inefficient.