Duplicated task must bear original task due date and assignee

Hi,
Let’s duplicate a task. We have the initial task merged into the new one. the merged task will be closed but still remains in the project and a link is created to the new one.
It would be really helpful that the closed merged tasks get the start date, due date, and assignee of the new one task. So, looking at the project where we do have the closed task, we’ll be able to get information on this task without having to click to see the new one task.
tx