Cloning virtual instrument track

Using Sonar Artist. Here is what I am trying to accomplish. Piano vsti on a simple instrument track. Clone the track so that I can exchange the the instrument for a different piano vsti on the cloned track, and blend to taste.
A different DAW I was using did this exactly as described, however when I exchange the instrument on the cloned track in Sonar, Sonar changes both tracks to the new vsti. 
Am I missing something obvious? I confess to being a (m)idiot.

Many ways to do things in Sonar. What you could do is ...
 
- Insert your new soft synth e.g,  as a simple instrument track.
- Select your clip(s) from your original track, e.g, by clicking in the clip header bar (at the top of the clip). (Shift-click on the first/last to select all in between, or less likely CTRL-click to select multiple non-adjoining clips).
- Hold CTRL and drag it/them to your new track. (CTRL will take a copy instead of moving the original clip(s)).

Use ctrl + shift to preserve vertical alignment when copy/dragging