1. In Records, Course, open the course record
2. Select the Restrictions 2 tab, and then open the Academic Year
3. Mark the appropriate start terms and unmark incorrect start terms
4. Save and close the course record

If this does not resolve the issue please try the following:

1. In Records, Course, open the course record
2. Select the Grading tab, and then open the Academic Year
3. Ensure that the attempted and awarded credit is balanced across marking columns that are associated with different terms. 
4. Save and close the course record