iTunes deletes listened-to episodes of podcasts, even though I have set it not to
I listen to a lot of podcasts at work. Whenever I sync my old ipod, itunes deletes all the episodes I have listened to, including those I've only heard part of. I absolutely, definitely do not have it set to do this, and I can see in the podcast settings for each of them: "episodes will not be automatically deleted after they have been played". This affects certain podcasts but not others. I'm running Windows 10, have plenty of space on the HDD. I don't want iTunes to manage my files for me, I want to do it myself.
iPod classic, Windows 10