This read-create TruthValue determines whether the Egress Priority Mapping table's operations are applied to this FlowPoint's outer tag for its specified COS, swapping the outer tag's priority according to that mapping when enabled, or leaving the outer tag priority untouched when disabled. An administrator turns this on when the flow's egress priority marking needs to be translated through a configured mapping table rather than passed through unchanged. For example, enabling this on a flow point lets an operator remark outbound priority bits to match a peering carrier's expected QoS scheme via the Egress Prio Map Table.