I have arranged lecture notes on my file system as follows:
- Lectures by XXX
- Lectures in YYY
- Lectures by ZZZ
Whenever I am importing the top level folder in Calibre, all the notes PDFs inside are getting individually imported as notes_1.pdf, notes_2.pdf,notes_3.pdf etc. Is there any means by which I can import the notes inside Calibre but still retaining the comprehensive structure?