Hi Paul,
Actually, the name of the loaded instance is "LASS Vcl". "[Cello]" is the name of the first instrument that is loaded. If you look at the other pictures I uploaded, you'll see the timing of what happens.
1. I click the plus button to add an instance
2. I choose "Open Project..."
3. Then, as the project loads, the new instance tab changes to the proper color and name while the instance is loading.
4. Then, once it's loaded, the tab reverts back to the default color and name.
The data is in there. It's reading it. It's even showing it briefly. It's just not keeping it.