Hi I'm Sankar ! 

No the migration certificate is not required at the time of document verification or counseling.

Here is the list of documents required:

1. Neet 2019 admit card

2. Neet 2019 rank letter

3. Marksheets 10th & 12th

4. Passing Certificate

5. Id proof e.g. aadhar card

6. If belong to any category then that certificate

7. Draft or security money

8. Online registration and fee payment receipt