If you are a student of Calcutta University and if you want to migrate from your university to any other university for further studies, then you need to clear your backlog in order to get so. Without getting it cleared, you won't be able to get the migration about it. Although, I would recommend you to contact the Calcutta University Darbhanga Building (Migration Department) so that you can get the perfect information regarding it.

To know more about Calcutta University visit the link below:

https://www.careers360.com/university/university-of-calcutta-kolkata

I hope this answer helps. All the very best for your future endeavors!