adding a shared layer to multiple canvasas in one cut & paste?
 

I'm not finding a feature that was available back when graffle had shares masters above the canvases. I want to create a new shared layer in one canvas and apply it to all 50 canvases in the doc without having to drag & drop to all 50 individually. I have tried multi-select and drag but it only appears in the first canvas. What am I missing?