Unable to delete addon domain animeflv.or.at – Orphaned userdata entry causing HTTPD rebuild failure

I am facing a persistent issue on one of our production servers (AlmaLinux 9 with cPanel/WHM v118) when trying to remove an addon domain: animeflv.or.at

Scenario & Problem: We attempted to delete the domain from the cPanel Domains interface under the account clientapp. The interface returned a generic error: Failed to remove domain: Unable to lock user configuration file.

After the failed attempt, the website files in public_html/animeflv were partially deleted, but the domain itself is now stuck in an inconsistent state:

1. Domain Removal: The domain is no longer listed under cPanel's Domains menu, but it still appears in /etc/userdomains mapped to clientapp.

2. Apache Rebuild: Running /scripts/rebuildhttpdconf fails because Apache detects a duplicate VirtualHost directive remaining in /var/cpanel/userdata/clientapp/animeflv.or.at

3. Data/SSL Conflict: AutoSSL is still attempting to issue certificates for domain, throwing errors in logs because the document root path no longer exists.

What I've tried so far:

• Ran /scripts/updateuserdomains to refresh system maps.

• Verified /var/cpanel/userdata/clientapp/ file permissions (set to 0640 owned by clientapp:cpanel).

• Attempted to clear cPanel datastore cache via /scripts/clear_array_cache.

Question: How can I safely purge the orphaned metadata for my domain from /var/cpanel/userdata/ and /var/cpanel/datastore/ without corrupting the main domain's configuration for this account? Is manually editing the userdata YAML file and running /scripts/rebuildhttpdconf recommended here, or is there a specific cPanel script to force-clean orphaned addon domains?

Any insights or recommended CLI commands would be greatly appreciated!