Financial Fields calculation does not consider past values

In the cash-flow page if we ask the tool to calculate automatically the financial fields, based on the discount rate (annual), we realized that it will not consider past values, if this analysis is performed in ongoing projects.

This means that some figures will be wrongly calculated, leading to false insights, sometimes even absurd, like the ROI calculations depicted in the attached picture.

The value of ROI should me much lower (around -95%) than the one provided, which simples considers the Present Value of Benefits by the Present Value of the Forecast (red), ignoring what was spend in the past (green)