trooper, Prince is asking that exact same of what you just said, how do you know there is a contradiction? DID Mirza Saheb write a book on fiqh? To find out a contradiction you got to have the man’s work on hand..
Also, wasn’t he a Qadiani? 
I mean, you refer one from Deoband, India as a Deobandi, you refer Ulema from these cities as Deobandi/Barelvi Ulema, why can’t we refer Mirza sahab as Qadiani where is the disrespect please tell…
One thing, PLEASE do not label yourself as AHMADI, you are just confusing the people out there.