Index: openacs-4/packages/acs-subsite/www/admin/site-map/instance-delete.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/www/admin/site-map/instance-delete.tcl,v
diff -u -N -r1.10.2.2 -r1.10.2.3
--- openacs-4/packages/acs-subsite/www/admin/site-map/instance-delete.tcl	18 Sep 2015 07:27:48 -0000	1.10.2.2
+++ openacs-4/packages/acs-subsite/www/admin/site-map/instance-delete.tcl	9 Jan 2017 16:49:27 -0000	1.10.2.3
@@ -35,14 +35,15 @@
     }
 
     if { $node_id ne "" } {
-        # The package is mounted
+        # The package is mounted, unmount it and delete it together
+        # with the site node
         site_node::unmount -node_id $node_id
-        site_node::delete -node_id $node_id
+        site_node::delete -node_id $node_id -delete_subnodes
+    } else {
+        # Delete the package
+        apm_package_instance_delete $package_id
     }
 
-    # Delete the package
-    apm_package_instance_delete $package_id
-
 } on_error {
     if {[db_string instance_delete_doubleclick_ck {
 	select decode(count(*), 0, 0, 1) from apm_packages