Yeah, you’re looking at the wrong feature, that is the point of confusion. The Scratchpad has always been the way you describe, we didn’t really change much with it this time around.
What you are looking for is described in:
- This blog post.
- Appendix E.4, Project Bookmarks, in the user manual PDF (Appendix E will be good to review in general).
- In the interactive tutorial, also in the Help menu, under the section titled “Using Bookmarks for Project Notes”, though if you have no idea what a bookmark is, you should start with the section called “Bookmarks”.
- And the already mentioned upgrade guide.
Most of these resources will have detailed descriptions of where to look, and where to find your old project notes for those projects you have upgraded from v1.