Hello ​@Newto Manychat ,
While you're editing your flow, all changes are saved automatically in real time. However, before publishing a new version, you can discard all changes by clicking the "Revert to published" button. This will cancel all edits and restore the last published version of your flow.
 

Some additional information:

• If you delete a flow, it can be recovered from the trash.

• Once a flow is published, it's not possible to revert to a previously published version. So be careful — instead of editing an important flow directly, consider duplicating it and making changes to the copy. This way, you won’t lose the original version.