Index: openacs-4/packages/xowiki/tcl/form-field-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/form-field-procs.tcl,v
diff -u -r1.248.2.52 -r1.248.2.53
--- openacs-4/packages/xowiki/tcl/form-field-procs.tcl	2 May 2017 13:51:25 -0000	1.248.2.52
+++ openacs-4/packages/xowiki/tcl/form-field-procs.tcl	3 May 2017 07:12:52 -0000	1.248.2.53
@@ -1137,7 +1137,7 @@
       #
       if {[my cleanup]} {
         set return_url [$package_id query_parameter "return_url" [$parent_id pretty_link]]
-        $package_id returnredirect [export_vars -no_base_encode -base [$object pretty_link] [list {m delete} return_url]]
+        $package_id returnredirect [$object pretty_link -query [export_vars {m delete} return_url]]
       }
     }
   }