Hi @mdc2957
If you deactivate or delete the AIOS plugin it does not change prefix back to wp_.
It will keep the changed table prefix in database and in wp-config.php.
Do you have any staging plugin installed it might be the reason or the website copied from another place it can also be the reason.
Yes, please take the backup of the whole DB and keep tables with $table_prefix
as per wp-config.php and drop all other tables.
Regards
Ah yes, I did have staging set up via a backup plugin I was using (but no longer am as I had troubles with it), so that must be the reason. I Imagine that duplicate tables should have been deleted by that plugin when I removed the staging site, but as noted it was giving me issues. Thanks for the reminder, much appreciated.