Use the Consider symmetrical source and drain for supply tracing option in the Export Options section to define a port with a predefined supply set or power domain that can be checked for the correct or compatible connection at the receiver side. By default, this option is deselected. Supply tracing is done by Power Manager for MOS terminals (Source and Drain) by considering them asymmetric in nature. When this option is selected, Power Manager traces through all devices irrespective of the way they are connected in the design.
Product Documentation