OneNote app and desktop and quick notes

I'm using a Surface 3. I installed the OneNote desktop (2016 I think; OneNotes doesn't make it easy to discover which version you're using) alongside the app. Mostly I work in the desktop OneNote, but for a quick note, pressing the top of the stylus and getting straight into taking a note is very convenient.

I'd swear when I first started doing this, the notes I created with the app appeared in the Quick Notes notebook of the desktop OneNote. Now they don't; they're different ones; older ones I think. Does anyone know how to make notes created in the app appear in a desktop version notebook?

Thanks. That successfully puts a section (a tab) called Quick Notes into the chosen notebook. And new scribbles made after clicking the stylus do go into that section. But there is still an entry at the very bottom of the Notebooks drop down in the desktop version called Quick Notes, and clicking that still brings up the old collection of notes from I know not where, and not the quick notes.

I managed to "delete" the old collection of notes. But still the app goes to one Quick Notes notesbook but the Quick Notes entry at the bottom of the desktop's list of notebooks goes to a different, now empty "Quick Notes".