Now if you want to make changes to an existing process, just clone it. You can save the clone as a new process with its own version history or as a new version of the current process. While a given process can have up to 50 versions, only one of those versions can be active.
If you want the clone to run concurrently with the original process, use the clone to create a completely new process. You don't have to deactivate the first process in order to activate the clone.
If you want to make changes to the clone and use it to replace the original process, save the clone as a new version of the original process. When you activate the new version, the previously active version is automatically deactivated.