@PinkElephant
That's exactly what happened to me and that's exactly what I did.
Working with multiple screens and multiple open notes I didn't realize I wrote where I shouldn't have, but I don't know when I made the mistake and at what point. I noticed this days later when I found some errors.
Therefore, I exported 6 enex files, the current note, the starting version and the 4 intermediate changes.
I then imported it in 6 new notes, so as to always keep the current note clean.
From each new note I exported the related PDF and the related HTML.
The HTML is unreadable and the PDFs show the changes, but also some changes never happened. I wrote this before.
Copying into Word, in my case I don't know if it's possible due to the type of content and changes made.
From what you write, the history is used to fully recover a note, but only if you know which one is the right one.
I'm repeating this from the beginning.
However, I understood what you told me and I thank you both for your help and suggestions.