How is maximum damper leakage modeled in commercial prototypes

edit

I'm Looking for information on how/if the maximum damper leakage requirements outlined in section 6.4.3.4.3 of ASHRAE 90.1 2019 are modelled in the the 90.1 commercial building prototypes.

page 115 of this report sates that "The energy saving impacts from the first two changes above are considered significant and are accounted for in the PI analysis." As damper leakage is the fourth change in the referenced list, does this mean it was never accounted for? And ,if the answer is no, why is something that does not save "significant" energy included in the standard in the first place?

Any thoughts or insights are appreciated.