If you can create the same thing using existing settings, it’s standard practice to create a new one.
For example, Microsoft’s backup solution only supports restoration to the same physical machine. This means that if you want to run it on a different physical server, you’ll have to create it from scratch.
You should think of moving or converting disk images in the same way.
Still, everyone wants to take the easy way out, so they convert it.
Since it’s your boss who authorized the conversion and you who carried it out who are responsible for ensuring it works correctly, I won’t stand in the way of that decision.