You can easily edit an active automation by clicking on the Edit button in the top right corner. When it's time to save your new changes, you can choose to do it in three different ways.
When you overwrite the current automation, collected statistics and history may be affected. Depending on your changes, delays and statistics for activities like emails and SMS may be affected.
When you create a new version of your automation, it will saved as a new draft without affecting the current automation. Trigger and entry criteria are shared. Learn more in this article.
A copy will be created and saved as a new automation in Drafts. Read more about how to copy an automation here.