Power Query Undo/Redo
The Power Query editor is nearly perfect! However when I accidentally deleted an Applied Step and realized I couldn’t undo that, I realized PQ really does have an opportunity for improvement! Please upvote this post so they will add Undo/Redo capability into Power Query!
Hans Schulze commented
Tableau has an excellent undo/redo. That's a very young company...
Kenneth Barber commented
This suggestion also mentions undoing deleting queries: