Index: mc_issue_api.php
===================================================================
--- mc_issue_api.php    (revision 5225)
+++ mc_issue_api.php    (working copy)
@@ -234,7 +234,7 @@
                                $t_relationship = array();
                                $t_relationship['id'] = $t_relship_row->id;
                                $t_reltype = array();
-                               $t_reltype['id'] = $t_relship_row->type;
+                               $t_reltype['id'] = relationship_get_complementary_type($t_relship_row->type);
                                $t_reltype['name'] = relationship_get_description_dest_side($t_relship_row->type);
                                $t_relationship['type'] = $t_reltype;
                                $t_relationship['target_id'] = $t_relship_row->src_bug_id;