This is especially important when importing the Home Groups CSV file.
When the STUDENT XML file is imported into the database, the Students are imported with their home groups already attached. If this Home Group data is deleted, students may be removed from their home group classes.
Other information which may be affected include prior scores, campus codes, and registration details. This information is required to produce the hollow dot on the summary page of the report, and allows results data to be imported into CASES21 at the end of the semester.
If your school is affected, reimport the STUDENT XML file and generate the Home Group Summary Subjects (via the Generate Menu in the Quick Setup screen) this will reassociate all the students with their home groups and enrol them back in their Home Group classes.