When field is not set, it is not set :-) (bug #953295).

ChangeLog

@@ -9,6 +9,8 @@ $Source$
     * libraries/export/sql.php: Minor optimalisations.
     * sql.php, tbl_replace.php, libraries/display_tbl.lib.php: Use same code
       for generating INSERT and UPDATE queries (also fixes bug #953250).
+    * tbl_replace_fields.php: When field is not set, it is not set :-) (bug
+      #953295).
 
 2004-05-12 Marc Delisle  <lem9@users.sourceforge.net>
     * db_details_structure.php: bug #951143, undefined $header_url_qry

tbl_replace_fields.php

@@ -120,11 +120,11 @@ if (!$check_stop) {
     
     $f = 'field_' . md5($key);
     $t_fval = (isset($$f) ? $$f : null);
-    
+  
     if (isset($t_fval['multi_edit']) && isset($t_fval['multi_edit'][$enc_primary_key])) {
         $fval = &$t_fval['multi_edit'][$enc_primary_key];
     } else {
-        $fval = &$t_fval;
+        $fval = null;
     }
     
     switch (strtolower($val)) {