beachboy4231 wrote:
That worked! But is there any way to actually to have it work the right way to avoid problems in the future?
That's the right way. If you add a new namespace for whose name there are already pages, you need to run maintenance/cleanupTitles.php
You hid the configuration change on a database backup+restore but it's still a configuration change. For the backup to restore to the same state, you should keep the same configuration.