For example, if you edit a deployed response, the state of the response, the responder that it refers to, and the rule in which the response is used changes to Needs_Deployment. The validity of the rule also changes to false as it is dependent on the response.

You can redeploy the objects that you have changed without undeploying the objects. In this case, the changes are affected only when you redeploy the objects. Objects that need redeploy are in Needs_Deployment state.