Index: openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl,v
diff -u -N -r1.185 -r1.186
--- openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	7 Dec 2018 11:31:54 -0000	1.185
+++ openacs-4/packages/acs-tcl/tcl/utilities-procs.tcl	10 Dec 2018 14:47:25 -0000	1.186
@@ -2262,7 +2262,7 @@
 
     if { $index1 == $len1 } {
         # We've reached the end of list1, finding all elements along the way, we're done
-        return [list]
+        return $missing_elms
     } else {
         # One or more elements in list1 not found in list2
         return [concat $missing_elms [lrange $sorted_list1 $index1 end]]