You can toggle feature flag targeting on or off; by default all feature flags targeting is set to off. Once feature flag targeting is set to off, the feature flag ignores all the release rules on the Audiences tab and would serve the flag’s default value as they are written in the code.
To toggle feature flag targeting on or off, use the switch on the upper right corner of the Audiences tab.
If you make changes to the release rules while targeting is off, you can either just the save the new rules or you can Save & Activate Targeting together. This is achived with the button on the bottom right side of the Audiences tab.