I am suggesting a function that allows you to Select Same Diameter when using the 2D Chamfer CAM function. I was making a fixture plate and in order to break the edge on the holes with the chamfer bit I had to select all 86 holes individually under Contour Selection-Chains. If you could put a function similar to what you have in drill-Select Same Diameter, then you would only have to select one circle and apply the chamfer to all the other holes.
thanks
Chris