We're thrilled to announce that you can (finally) undo and redo changes in your Flows!
Any edits you make during a Flow-building session can now be quickly reverted. That includes adding, removing, or repositioning steps, updating step settings, changing step connections, and so on!
To use, simply type those keyboard commands you know so well:
Or, click on the arrows now located in the Flow navigation bar.
To undo or redo changes in step settings, you can use the same keyboard commands, or click the arrows at the top of the window.
Source: https://parabola.io/updates/its-okay-to-make-mistakes