[a] On occasion the promotion declares a championship vacant, which means there is no champion at that point in time.

This can either be due to a storyline,[b] or real life issues such as a champion suffering an injury being unable to defend the championship,[c] or leaving the company.

After the win Hamada began working in Japan more and more, thus never defending the title in Mexico.

The title has not been defended or promoted since 2007 where when IWRG stopped working with Consejo Mundial de Lucha Libre (CMLL), La Amapola's employee.

Amapola has not officially been stripped of the title; it is inactive as the IWRG does not promote it or refer to it any more.