Hi, running 3.13 ispconfig multi-server on ubuntu 16.04. we have multiple webservers. previously some sites have been moved between servers by changing the server_id In the master database and then re-syncing all services on the new hosting webserver, ensuring all the website files are correctly copied to the new server website folder, then resyncing the old webserver to remove the website from it. that all seems to be fine, the websites work ok on the new servers, on the old server, the vhost conf in /etc/apache2/sites-available Is removed, as is the symlink in sites-enabled. so no problems with any of that. we're now looking at migrating all our current servers, to new servers, running ubuntu 18.04, in a new location. and I've been testing the migration using the migration tool, from one of our smallest webservers. this has bought to light that all the information for any vhosts/subdomains/aliases that were previously moved by changing the server_id's and resyncing are still in that webservers local dbispconfig database. so the migration tool tries to migrate a site that is no longer on that server. shouldn't the information for any websites moved in this way have been removed from web_domain, ftp_user etc tables during a resync? am I ok to just delete any rows containing old moved sites/users etc from these tables on the webservers local dbispconfig database?