I could not find a way, while iun draft mode, to go back to a previous step that I wanto to delete, I used the "undo" option, but without any woranig the system autoamtically deleted all the chnages made so far and I have lost 4 hours work in a second.

therefore I suggest to add a feature like in word or other that the unod will take oyu to the previous stept/change and at least add a warning message that the "undo" button will delete all the amendments unless it a version has been puiblished.