Hi @Mikee ...
When I was a Canvas administrator in higher education, we had the standard "production", "beta", and "test" environments with our paid Canvas instance. So, if there were staff changes, I'm only aware that we only made changes to our "production" environment because the "beta" and "test" environments would eventually be overwritten with data from the "production" environment. This document describes these things in more detail:
What is the Canvas release schedule for beta, production, and test environments?
Other schools may do things differently, but I believe this is how we handled things when I was there.
Hope this helps a bit.