Check whether the bus send of a Cue, Track, or Waveform is set to a value other than 0 on the same bus send number on which you want to apply the AISAC.
The values specified for the bus send of the Cue, Track, and Waveform are multiplied by the bus send of the AISAC.
Example: the bus send of the Cue (1.0) x Bus send of the Track (0.5) x Bus send of AISAC (0.5) = final bus send (0.25)
Other values may be multiplied as well, including other AISACs or Track Automations.