OBC-NCL certificate for migrated people (only for central quota)

OBC -NCL certificate I was born in Tamilnadu and obtained BC Nadar certificate (OBC in central govt) but raised up in Maharashtra where BC Nadar caste doesn't exist, hence I completed my Post-graduation under General category. Now I am married and settled in Chennai and wanted to pursue PHD in Central govt institute under OBC_NCL category which is asking for OBC -NCL certificate. My father is a retired Maharastra govt employee and come under non creamy layer category and permanently resides in Maharashtra. To determine my OBC-NCL status I understand that my father’s income is taken into account and its less than 4.5 lakh per year (pension) which is less than 8 lakh limit set by govt for OBC-NCL status. When I approached Maharashtra E-Sewa they said my caste is not listed in their state and cannot issue OBC -NCL (as we have migrated to Maharashtra from TN). Now where should I approach for getting my OBC-NCL certificate ? Is it in Tamilnadu or should I again try in Maharas