The Eurodollar must reach the daily supply zone to complete its daily downtrend. Since the 4-hour downtrend is continuing right now, the downtrend should propagate to the upper time. So, reverting is essential. If the downward wave does not continue again in the daily supply zone and stops, it will be propagated to the upper time correction process. That is, the size of the rollback will be expanded to a weekly or monthly course.