Forecasts
The Cashflow uses the figures displayed in the Forecast.
The Cashflow period defaults from the Forecast. Should you wish to change the Date of the displayed Cashflow you need to go back to the Forecast and select a new period.
Any changes to the Forecast will automatically flow through to the Cashflow when it is opened. If someone else is updating the Forecast while you are logged in to the Cashflow you can Refresh the Cashflow which will bring through the new Cost to Complete figures.