Just clarifying, you aren't exactly 'pay protected' in the new month. See your iNK magazine for the formula (I'd repost it but it's not in front of me and I'm lazy). In this example, say your three day was worth 15 hours and the red-eye turn was worth 5 hours. You would be PRT for ten hours, and the additional 5 you work for. It's not that you would get 20 hours of pay because they 'added' a red-eye turn.