I have a Joomla! 4 site using the bs5 template. I paid for some customizations to be made to the site. Recently I discovered some corruption with the Joomla core system and so am migrating my content to a new Joomla! 4 installation. Is there any documentation on (or can anyone provide instructions) how to migrate the customizations? I've copied over the custom.css file under the local directory which seems to have only resulted in partially replicating the appearance on the original site. I'm not sure where to find the additional modifications, whether in the filesystem and/or database. Any help would be appreciated.