I'm late to the Joomla 4 party but have just upgraded my site and so far all is going really well. When I removed the previous version of Akeeba Backup (following your documentation) it uninstalled fine but reported that the fef and fof extensions were still in use by something so they were not removed. I didn't take a screenshot. Your documentation mentions that other extensions could rely on fef and/or fof even though they're well out of date, etc. Is there any way to determine what might be relying on them or should I just take a site backup, blow them away and see what breaks, if anything? Thanks.