Hi @MelanieNeedle ,
Thanks a lot for reaching out.
Building duplication
What you are observing is correct: the duplicate tool only works for individual building floors within the same building. There is currently no tool available in Urban, that allows you to copy & paste entire buildings neither within the same parcel nor from one parcel to another.
Please feel free to suggest an ArcGIS Urban Idea if you think that such functionality should be available in Urban.
As a workaround, you could use the Upload footprints capability:
1) Draw the building footprints in ArcGIS Pro using the editing tools.
2) Publish the layer with the building footprint polygons to ArcGIS Online
3) In the plan configuration, use Urban's "Upload footprints" capability
4) Use the spaces editing tools in Urban to refine the buildings that were generated based on the imported building footprints.
Building alignment
Currently, there is snapping when drawing new spaces/surfaces or when editing the vertices of existing spaces/surfaces. There is no snapping when moving entire buildings.
If you think that such capability would be crucial for Urban, please suggest an ArcGIS Urban idea - ideally with some additional insights about the use case(s) where such functionality would come in handy.
In case of additional questions and feedback, please let us know.
-Dominik