You dont change the url just the server path now one thing that needs to be changed that I discovered is this in adm-misc.php. The code in bold must be removed. The url does not change when your moving the path below the server and the original if clause prevents from just changing one so make this edit
if ( $newpath == $Globals['origfull'] || $newpath == $Globals['origfull'] ) {
diewell( "Values were not changed. No action taken." );
}