Most often, the Action Mappings will be automatically reloaded if the WAR is redeployed. If not, there are two things you can try: Setting the reload property to true and destroying the configuration.
Setting Reload to True
action.properties
### Configuration reloading ### This will cause the configuration to reload xwork.xml when it is changed action.configuration.xml.reload=true
Destroying the Configuration
Create a utility Action that calls
com.opensymphony.xwork.config.ConfigurationManager.destroyConfiguration();
Invoking destryConfiguration
should destroy the current configuration and force the configuration to be reloaded on next request (which you might want to make yourself!).