The augmented parameter really has nothing to do with producing a Lorentzian plot. It is to enable an improvement in the PPV method to handle long time constants (often in the bias circuitry) which result in a hump in the phase noise transfer function. In fact from MMSIM72 ISR3 onwards augmented=yes by default in both shooting and HB pnoise.
In earlier versions, when augmented=yes was turned on, it also enabled (for HB only) the calculation of the "line width" and computation of the Lorentzian (i.e. nonlinear) noise shape near the carrier. This was misleading because it was independent of the augmented algorithm, and also was doing it only for HB and not for shooting.
What we did from MMSIM72 ISR4 onwards was to introduce a new parameter "lorentzian" on pnoise and hbnoise:
This option determines if the Lorentzian plot is used
in the oscillator noise analysis. Possible values are
no, cornerfreqonly or yes.
The default is just to compute the corner frequency (i.e. the line width), and to get the Lorentzian shape curve you need to set it to "yes".