Under-appreciated Benefits of a Source Course
In Canvas, all concluded sections are preserved (in theory) forever. This has made it easy for people to get into the habit of just copying content from section to section over time, tweaking as they go. The danger of relying on this habit is that what the credit schedule giveth the credit schedule also taketh away — sometimes as a temporary accident and sometimes with no warning.
If you’ve been updating your material for an upcoming section in that section, and the section is cancelled or re-assigned, your work could pass out of your reach or beyond anyone’s retrieval before you get a chance to do anything about it. But if you update your material in a source course, changes in the schedule will never affect it.