Surface db field for "mark as played"
Looking in the backup db file, I don't see a way to flag episodes that have been "mark as played". For episodes played in the app directly, playbackDate > 0, but for those the user has just marked they still have -1 values. But the app seems to have a way to distinguish, b/c in "Playback History" those episodes don't show up.
Is there another available field that captures user-marked-played, and if not can it be surfaced in the backup?