Dear Pankaj,
Very happy to see spontaneous reply from you for all questions. Request a help from you. I have got a job in Bahrain & in my passport ‘Emigration Status’ page has a ‘Deleted’ stamp on it & the next page has the same words (‘Deleted’ page wordings) stamped & signed by Regional Passport Officer. Have attached an image for your reference.(http://img1.imagehousing.com/72/46a2a59a1efdb008c95889d76fa1410f.jpg) 
Please let me know if I will have to get an ECNR. If yes,
1) Do I have to get it from the Passport office (Chennai) 2) Will I be able to get it on the same day. 3) I don’t have any residence proof currently, as I had just recently shifted to Coimbatore. Is it possible to get it done in person & take back the passport in person.
Request your help on the same.
Thanks, Rakesh