If I am from Madhya Pradesh and I want a deemed college of Maharashtra do I have to register in the state registration as well ?
The registration has been started for AIQ & Deemed Universities, In order to get admission for the deemed Universities in Maharashtra also you need to apply for it. I would suggest you to go through with the given below link to apply for the Deemed universities.
https://medicine.careers360.com/articles/neet-counselling
Good Luck!