No, the trace does not have to be separated.
Even if you just keep at it.
It's better, but not mandatory.
The problem that
Quan83 is having is the connector dashboard connectivity.
If that is remedied, it is also very easy to do without a severed conductor track.
Think it's nice of you that you have created a picture for separating the conductor track here again.
But why not link my picture from the instructions?
It's much easier to see there.
If you have proceeded in this way, then the scooter is activated and has been assigned a valid BLT-id.