You can safely delete the source folders after updating
It does not happen to me. PHP 7 source folder is deleted after I recompile PHP. So it must be related to different settings then.
Code:#CustomBuild Settings custombuild=2.0 autover=no bold=no clean=yes cleanapache=no clean_old_tarballs=no clean_old_webapps=no downloadserver=files1.directadmin.com