Maybe you can try this and it is way easier...
edit the itil_arcpur_cfg.xml file in site\cfg folder to remove the requirement for open tickets. For example, for cr(call request), change
<default_query>type = 'R' AND active=0</default_query>
to
<default_query>type = 'R'</default_query>
so being open is not excluded. I don't test this yet and simply throw out here for your consideration. Thanks _Chi