Was unhappy not knowing what was changed, so i logged in via shell made a copy of /etc/asterisk applied the changes, and then did a diff of the two folders. found the changes were likely from the previous admin, for some sip provider name changes, that were ok.
It’s nice to be able to make multiple changes and not have them affect Asterisk until after hours.
I’d imagine some pioneering soul could hook into the reload process and make a file backup part of that process, allowing a comparison of the two versions.