A concept of an Artificial Task
What are the Artificial Tasks? They are nothing more but tasks added to the app's - Gantt chart (and columns of Gantt's WBS Waterfall Panel) yet not reflected in Jira whatsoever.
They can perfectly coexist with Jira issues presented on our Gantt chart and on Gantt's WBS like the rest of Jira's native tasks and go under the same set of rules (including linking, sorting etc.). We can create and set Artificial Tasks to be visualized asa regular tasks or application's Sub-Tasks.
Artificial Tasks can be arranged into Templates in the Program Configuration panel.
They make great placeholders, temporary tasks and are useful in many other scenarios. Our Program cloning mechanism uses them to replace Non-Issue Jira entities (like Components, Versions, Projects) which it is unable to recreate in Jira while building a new Program.
As Artificial task are not Jira issues they do not use Jira fields, hence no dates are set as Start or End date. It is however possible to aggregate the MIN (earliest) or MAX (latest) date from all the children tasks in the Program Configuration - Gantt - Setting the Column views.