Script (or otherwise) for release limits on all nodes of a surface

I sometimes need to copy a surface using the Copy/Paste pop-up menu in the Suirfaces tab. But these days a number of Iray-based surace have one or more limits removed. Copying from non-limited surface to a limited one doesn't set the destination to non-limited.
I could write the script myself but I thought I'd check first. Or maybe there's a Secret Sauce shortcut to untick the Limit settings on all the nodes for a given surface. D|S has a lot of Easter Egg features, but there's only so much time in the day to hunt for them.
Comments
This might suggest a useful starting point http://docs.daz3d.com/doku.php/public/software/dazstudio/4/referenceguide/scripting/api_reference/samples/material/deep_copy/start