We are using PowerSchool as our SIS and connected with Canvas LMS.  We have a teacher who resigned  on 2/3 and a new teacher started on 2/4. 

How do you handle this change in Canvas?  If the teacher who left remains active in PS (but cannot log in), then the new teacher is just listed as a "teacher in the class and none of the previous assignments/grades have been lost, but he cannot get grades to sync to PowerSchool. 

If we deactivate the previous teacher in PS, then a new course is created with new teacher name and previous course work from students is lost.    

Any guidance is appreciated.