Answer
(Fatwa: 317/317=M/1429)
There were not separate Shaikhs of Hazrat Haji Imdadullah Muahajir Makki (RH) from the above mentioned chains i.e. Naqshbandi, Chisti, Saharwardi and Qadri. Hazrat Haji Imdadullah Muahajir Makki (RH) was the successor of Hazrat Miyan Noor Muhammad Jhanjhanvi (RH). And Hazrat Miyan Noor Muhammad Jhanjhavi (RH) had got permission of bai?ah (allegiance of oath) from all the four chains. Therefore, it may be that Hazrat Miyan Noor Muhammad Jhanjhanvi (RH) had permitted Hazrat Haji Imdadullah Muahajir Makki (RH) to do bai?ah from all the four chains. So in this case, Hazrat Miyan Noor Muhammad Jhanjhanvi (RH) will be the Shaikh of Hazrat Haji Imdadullah Muahajir Makki (RH) from all the four chains. For details, see books: Munajat Maqbul, Kullaiyat Imdadia, Ziaul Qloob etc.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband