Michael began working with Paul Anka in 1983, a year after Thriller was released, for the latter's duet album Walk a Fine Line. These collaborative sessions gave three songs: Love Never Felt So Good, I Never Heard and It Don't Matter to Me. Anka kept all of the stem recordings, given that they were all recorded at his private studio; Michael was always given a cassette reference tape. Unfortunately, these tracks were all put on the back burner after Michael attempted to take the stems of I Never Heard without permission. Anka threatened legal action and they were returned.
To my understanding, Anka was approached regarding Love Never Felt So Good and handed over the stems then. Not quite sure when this was, to be totally honest; it could have easily been back in 2010. But in any sense, John McClain had the masters to work with, so this won't be an amateur sounding recording.