Enrollment expiration in child course doesn't unenroll student from meta-course

The expiration date when enrolling the student in the child course doesn't carry through to the linked meta-course(s). Even though the enrollment in the child course expired, the student stays enrolled in the linked mata-course(s). The only way to remove the student from the meta-course(s) is to UNENROL him from the child course. But the consequence is that we lose information from that student both in the child and meta-course(s).