Index: /branches/release-40/lib/MT/ObjectDriver/Driver/DBI.pm
===================================================================
--- /branches/release-40/lib/MT/ObjectDriver/Driver/DBI.pm (revision 2625)
+++ /branches/release-40/lib/MT/ObjectDriver/Driver/DBI.pm (revision 2629)
@@ -384,4 +384,5 @@
 
         if (defined($terms)) {
+            my $mutator = $stmt->column_mutator;
             $stmt->column_mutator(sub {
                 my ($col) = @_;
@@ -389,4 +390,7 @@
                 if ( my $alias = $orig_args->{alias} ) {
                     $db_col = "$alias.$db_col";
+                }
+                if ( $mutator && 'CODE' eq ref($mutator) ) {
+                    $db_col = $mutator->($db_col);
                 }
                 return $db_col;