tommy,
I guess, Pro team may help to anwser.
In my understading, however, the workscopes for ArcGIS Pro are fully different from desktop ArcGIS. Certainly, we are still learning and also trying to understand the purposes why ESRI makes huge efforts for Pro.
To me, architectures and audiences between Pro and ArcGIS desktop are also targeting differently, at least, so far. So, not surprised if we couldn't seamlessly & interactive use some things among two products.