It's now possible to change the time of a scheduled edit without having to clone the edit first. You can modify the start time of a scheduled edit anytime until it starts. After an edit runs you can still schedule an undo, even if you didn't schedule one when creating the edit.
To edit the start or undo time go to the edit's detail page and either: - Click on the pencil icon next to the scheduled time - Select 'More actions → Edit schedule' from the top menu
This should make the process of managing sales easier and remove the need to clone edits when you want to modify an edit's schedule.
Learn more about scheduling edits.