Restore the ability to leave the date blank.
The software has been changed to require the entry of a session date before the assignment can be saved. This is very inconvenient. I often create questions in advance using fake assignments to store questions or to create assignments that will actually be used in the future but I do not know exactly when. If the date is left blank, it is sorted to the top so I can use the question in another assignment or assign a date when the assignment is actually use. Please restore the ability to leave the date blank.