SB1.1 Has two drawbacks concerning this subject.

1. When you copy Button(fx:id: myButton) and paste into a new document the fx:id is lost which is unhelpful because:
- The fx:id is lost silently so the user may not notice, causing attached logic to fail
- We cause unwanted work for the user as they need to investigate and restore every fx:id that was lost

2. When you copy and paste Button(fx:id: myButton) into the same document the fx:id is lost.
- Again, the fx:id is removed silently from the pasted node

I propose the following:

Button (fx:id: myButton) in Clipboard
User pastes into Document
Does the fx:id: myButton already exist?
- No: Button (fx:id: myButton) is pasted
- Yes: Button (fx:id: myButton-1) is pasted and Info bar shows warning: “The fx:id myButton already exists - renamed to myButton-1”