Never lose your contacts in Fourleaf. If you or your child were once enrolled in a school have since graduated or left, you are still able to access directory information for those who were in the directory at the same time as you. (NOTE: Some schools may place you in Alumni status over the summer break and restore full access near the start of school).
The search function should work as it did before
If you wish to see class lists, then type in the name of the class in the search field. Click on the results to view the class. You may need to adjust the date filters to cover the time period you are interested in (see image below). You will not have access to anyone who left the directory before you joined or who was added to the directory after you left, only to those who were in the directory at the same time as you.