If a user deletes notes from the canvas, but then decides to re-add them through highlights, it will not add them.
This creates a situation where the user must unhighlight, re-highlight, and retag lines to then be able to successfully use "add highlights as notes" again.
I ran into this problem when just first testing the platform to understand the tools, etc.
Thank you for your work on this tool, I'll continue to contribute in the future.