Evernote Migration 3: Notebooks to OneNote

An overview of how I moved my 8 most critical Evernotebooks to OneNote.
See Evernote Migration Part 1: Decision to Leave Evernote ( • Evernote Migration Par... ) for my decision to leave Evernote and why, and how I very quickly ruled out any of the low-cost alternatives. (If I was willing to pay more for a competing product, I would just stay in Evernote.)
See Evernote Migration Part 2: Notebooks to Folders ( • Evernote Migration Par... ) for how I moved my largest notebook to files on my hard drive. These 600 notes are only receipts for tax purposes and are only necessary for the unlikely audit. The hard drive folders allow for easy recall if ever needed, but so highly unlikely that I did not want to migrate them to OneNote.