Yes, but they also affect the shape of the curve. They don't just shift the whole flow range leaner or richer. Also the idle air bleeds serve a much different purpose than the HSABs. While the HSAB feeds air into the well to emulsify the fuel within the well, changing the fuel flow differently at different areas in the flow curve, the idle air bleeds are for the most part simply a vacuum leak, that controls the amount of vacuum pulling on the idle well and idle jet.
