Thank you @Dave-in-Decatur to explain the reason of my problem, which is that, as you write, " Evernote introduced a new syn structure for notes, and older notes have to be updated when they're opened. "
I did read the thread before asking my question, but I cannot locate this information in the thread quoted by you... Perhaps you wanted to quote another thread? Anyway, my questions is answered, so no pb.
Regards,
VP