Index: generic/predefined.xotcl
===================================================================
diff -u -rc72f9f638677608fab1502cd696c8f2d6b2952f9 -rb872864b1f6375c55cf561c9e25335951f1386cf
--- generic/predefined.xotcl	(.../predefined.xotcl)	(revision c72f9f638677608fab1502cd696c8f2d6b2952f9)
+++ generic/predefined.xotcl	(.../predefined.xotcl)	(revision b872864b1f6375c55cf561c9e25335951f1386cf)
@@ -564,7 +564,7 @@
       if {$cmds ne ""} {
         foreach cmd $cmds {
           foreach {op def} $cmd break
-          $origin trace remove variable $var $op $def
+          #$origin trace remove variable $var $op $def
           if {[lindex $def 0] eq $origin} {
             set def [concat $dest [lrange $def 1 end]]
           }