Subsites 'Page not found' after plugin updates

I just auto-updated several plugins and the Weaver theme and everything went well. When I went to the base site again all was working well. But when I went to any of the subsites and clicked on a post link it took me to a “Page Not Found” error.

To fix it I went back to Network Admin space, edited each of the subsites, and simply did an Update without making any changes. That appears to have re-registered the path names and all are working fine now.

Is this something that should have happened and I just never saw a note about how to recover, or is it something that needs to be looked into?