archaius-core/src/main/java/com/netflix/config/ConfigurationBasedDeploymentContext.java
@Override
    public void setDeploymentDatacenter(String value) {
        super.setDeploymentDatacenter(value);
        setValueInConfig(DEPLOYMENT_DATACENTER_PROPERTY, value);
        setValueInConfig(ContextKey.datacenter.getKey(), value);
    }
@Override
    public void setDeploymentDatacenter(String value) {
        super.setDeploymentDatacenter(value);
        setValueInConfig(DEPLOYMENT_DATACENTER_PROPERTY, value);
        setValueInConfig(ContextKey.datacenter.getKey(), value);
    }
Call super and also update the configuration to reflect the changes.

@param value