+ # Clear $::form of values that may have been set so that following
+ # Perl upgrade scripts won't have to work with old data (think of
+ # the usual 'continued' mechanism that's used for determining
+ # whether or not the upgrade form must be displayed).
+ delete @{ $::form }{ keys %{ $::form } };
+ $::form->{$_} = $form_values{$_} for keys %form_values;
+