Index: openacs-4/packages/acs-subsite/www/admin/configure.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/www/admin/configure.tcl,v
diff -u -r1.14 -r1.14.2.1
--- openacs-4/packages/acs-subsite/www/admin/configure.tcl	1 Oct 2017 12:16:05 -0000	1.14
+++ openacs-4/packages/acs-subsite/www/admin/configure.tcl	27 Sep 2020 17:56:56 -0000	1.14.2.1
@@ -48,9 +48,8 @@
 } -on_submit {
     apm_package_rename -instance_name $instance_name
     subsite::set_theme -theme $theme
-    set group(join_policy) $join_policy
-    set group(description) $description
-    group::update -group_id $group_id -array group
+    group::update -group_id $group_id \
+        [list join_policy $join_policy description $description]
 
     switch -- $visibility {
         any {