Hey guys!!! I managed to recover all the notes from the old tree structure - in Norwegian. I'm about to get them for my other languages. In the meantime, I wanted to post how I did it.
I found this link from Luca-someone in this thread:
If you use that link, it will take you to a page that, with a very little scrolling, you will come down to where there are some tabs: to wit: Tree, Skills, Words, Tips and Notes.
If you click on the "Tips and Notes" tab it will take you to ALL THE NOTES for whatever course you were studying when you signed in to Duome.
With "Select All" (for me, Ctrl-A) I got the whole whopping 270 pages, put that in a word document, and with a little finagling I got rid of the first 19 pages, which were basically the Table of Contents. I now have a nice document on my computer that contains all the "Tips and Notes" from the olden days, when there were so many happy little trees, for Norwegian.
I hope this helps someone like me, who is not only still grieving over the loss of the tree, but also the loss of those notes!!!