How do I delete the data date?

Answer

A data date may never be deleted. However, the most current data date may be reset to the project start. This will have the effect of deleting all previous data dates and de-actualizing all objects. To reset a data date, right-click on the data date and select Reset to Project Start.

Alternatively, the most current data date may be hidden.  To hide the data date, click Schedule > Modify Settings… from the menu bar and choose the Displays tab. Uncheck or check the box next to Current Data Date to hide or show it respectively.