Artisan Dual Extruder - Why does Luban always start with T0 even when i assign the model to the right extruder?

I'm trying to do a simple test print using only the right extruder.

In Luban (v4.15.0), i assign the model to the right extruder in the object list. Everything looks correct in the UI.

However, when i slice and check the G-code, it always starts with: T0
So the printer initializes the left extruder, even though the object is clearly assigned to the right one.

Later in the G-code i can see:
M104 T1 S240

But there is never a T1 command before extrusion begins.

From what i understand:

• Object assignment does not override the initial tool selection
• The start G-code in the machine profile forces T0

Is this intended behavior?
Is there a proper way to tell Luban to initialize with T1 automatically when printing right-only?

Or is editing the Start G-code (changing T0 --> T1) the only solution?
Would love to hear how others handle "right-only" prints.