I was in a meeting today that covered a range of topics related to final grades passing from an LMS to an SIS. Among the topics was whether LMS's in general -- and Canvas in particular -- have a way to "handle" incomplete grades.
None of the LMS's that I've dealt with has had any functionality in this area, other than this sort of work-around. Incomplete in Final Grade
How does your school (assuming higher ed) handle incomplete grades? At our school, an incomplete in the SIS also needs to have alternate grade provided, in case the student doesn't complete the required work on time.