I have a June Labor forecast which is weekly for staff from June to September, I have no issues generating any of the monthly or cumulative measures for this. But now I have a July labor forecast from July to October. What I want to do is where I have a later forecast I want to use those numbers. So June - (June forecast) July - (July Forecast) August - (July Forecast). When the August forecast is loaded I would expect: June - (June forecast) July - (July Forecast) August - (August Forecast). The cut off point for using the updated forecast is basically the current date. If on July 1 you had a forecast (from June) for the week of July 6 of 100 hours, and you come out with the July revision, that revision can't now state the forecast for July 6th is 80 hours, because you've already passed that week. I realize this might be pretty confusing hopefully you follow.