Except for the "100% Watched" being displayed, that recording is behaving identical to what has happened to many recordings on both my HWS following new updates. I've had it happen to several of my movies and episodes of shows up to a certain date. Sadly there doesn't seem to be any method of recovery after this happens. I know it's not what you want to hear. I've never appreciated having to do it either, but any affected recordings will just take up space until you delete them.