Tackled this today.
Only remove half the weather proofing.
Put the window all the way up.
No need to remove glass.
Door lock is useful though to get the actuator out.
However the new part from BMW needs the threads tapped (m6x1.0) in it so that the existing 3 machine screws can be used. This is because the part comes 'unthreaded'!. I suppose it saves costs?