Max does not allow you to copy/paste parameter wires, as it does with most other controller types. This is still capable, however, through MAXScript.
This video shows you how to go about creating an instance (cake walk) and unique copy. When creating a unique copy, it copies the controller but the wire no longer updates along with it’s targeted track. Really, all the copy needs is a kick in the butt to get it to start working again.
This can really help improve workflow, as it allows you to set up instances of wires throughout your rig and easily copy from one track to the next rather than manually connecting each time.