Copying detail views

In Rhino 5.0 I can design a machine with various parts on different layers. I make a layout, and start with one detail, and turn off all but one layer in that detail. I then make a copy of that detail, and turn on the next layer that I want to show. I continue in this manner in order to illustrate an assembly sequence.
In Rhino 6.0 WIP, when I copy a detail, the newly created detail has ALL layers turned on.
Is there a way to copy a detail, and NOT have all the layers suddenly turned on in the new detail.

That looks like a bug to me… thanks. I filed it as