Room setpoints are sync'd between Space Data and HVAC System Parameters via the Space Data Link which can be set on the System Parameters interface and allows editing either via Space Data or directly in the ApacheHVAC file System Paramaters.
This tickbox is active by default and will, by default, push changes to space data in the proposed model. As the step to generate the baseline building is upstream of creating the HVAC files, this creates a scenario where changes could be made to the proposed space setpoints after the baseline building was generated. The end result would be different setpoints for the same space in the baseline & proposed buildings which is not compliant with the rules.
This action presents a dialog, which allows the user to choose to push setpoint changes made in the proposed ApacheHVAC file to the baseline space data as well as the proposed. This means that setpoint data in the proposed and baseline will be aligned.