Include start and end dates with External database course creation

When creating courses from an external database, the only fields used are fullname, shortname, courseid, and categoryid. No start and end dates are used, even when included in the the file. The start date of all the new course is the date of processing and there is no end date.

It would be great if start and end date for new courses could be set based on the external database record at the same time.