I have a class at Khan Academy with students in it, their work has been progressing for well over a year. They log in with their usernames (not email) and passwords, their accounts are child accounts under their parent's accounts.
I also have a class on Google Classroom with THE SAME students in it. They have google accounts with their own email addresses that were set up with Google Family Link so their parents still manage their accounts.
When I try to sync Google Classroom to my Khan Academy class, it always shows these students as pending and sends them emails to join. I need for them to be able to keep their current Khan Academy account as it is (with their badges, points, activity, history, mastery, and assignments). Is there any way to actually sync with Google Classroom and have these kids keep their accounts intact?