The system needs to retain, display, and report on historical forecast data. Right now forecast data is overwritten each period, so if you log in on the first of the month to review, the prior month's forecast is gone. You can save a copy of your forecast each month, but that is a manual workaround rather than a solution. There is no way to see forecast versus actual performance over time in reporting or in a dashboard view. The ask is for the system to keep a snapshot of each period's forecast automatically, and to make those snapshots available in reporting and dashboards so we can track forecast accuracy against actuals across the life of a project.