What: In Ongoing all active projects are listed and you see how the revenue has been recognized and forecasted. The agency total appears at the bottom of the page. If you switch to the Invoicing tab, you get an overview of how much you have invoiced a client or on a project each month. The total of invoiced value and sent value is at the bottom of the page.
This might help if you are wondering:
Note: The filter stays active until changed.