This Silva extension provides you with a form in ZMI on the service service_extensions named manage_renameUsers that let you in one time rename references to a lot of Silva users across all the Silva site.
To do this, you upload in this form a CSV file that contains a mapping from the new user identifier to the old one.
The code for this extension can be found in Git: https://github.com/silvacms/silva.security.renameusers
TODO: Figure out how to actually get changelog content.
Changelog content for this version goes here.