An instructor reports that imported Turnitin assignments from a previous course produce the error: "This assignment does not have a valid assignment title, start date, and / or due date. Please contact your instructor ..." when the first student tries submit a document. The error occurs even though imported assignment start and due dates had already been adjusted in the new course and are in the range of availability for student submissions. As a workaround the instructor changed the start date for the second time.
What are best practices for copying Turnitin assignments from a previous course? Is it recommended or should instructors create Turnitin assignments from scratch in a new course? All assignments past and present use the LTI app so transition from the legacy API is not an issue.