Speech of opposition : There is no such Salat as ‘Umri Kaazza. so it is against Islam and bidaat to pray umri Qaaza.
What is said in Islam : There is existant of umri Qaaza in Islami Shariah. There are two kinds of Qaaza Salat in Islam. 1-Qaazae ‘Ada. that means the qaaza salat whose rakaats are identified.2- Qazaa e umri . that means the Salaat whose rakaart numbers could not be identified. That means there could be or not could be qaaza namaz. It is mustahaab and good deed to pray Qaaza salat to be a good muslim. Even Hazrat Imam Abu Hanifa Prayed Umri Qaaza salat.