• Leased agreement registration after mutation in MP

Dear Learned Members,
 My Grandfather purchased a land measuring 22500 sqft in 1938 from Municipal Corporation directly on lease. That time Lease Deed was issued on my Grandfater's name for 99 years which was stamped according to the regulations and laws at that time. Meanwhile Municipal corporation said lease tenure is reduced and new lease deed was formed in 1968 for 50 years till 2018. My Gramdfather expired in 1981 and according to registered will in 2006 my fathers name was mutated in Municipal Corporation records through all legal formalities. Lease deed was made signed between my father and authorized signatory of Municipal Corporation, December 2006, when asked to the municipal corporation employee about registration of lease deed in the name of my father they said " it is not necessary, just pay lease rent on time, in 2018 lease has to be renewed at that time you get it registered". 
Meanwhile after the death of my father, In March 2011 lease for 1550 sq ft land was mutated in my name according to the registered will following all the procedures required for mutation by Municipal Corporation Jabalpur, my name was also mutated on khasra. New lease deed was made by Municipal Corporation, that is also not got registered under registration act because the employee said me " it is not necessary, just pay lease rent on time, in 2018 lease has to be renewed at that time you get it registered".
Now I applied for the leasefree on for my 1550 sqft land. Same municipal employee said me that I have to give a copy of registered lease deed.
When I read the rules in that it is written that lease should be valid. 
In the application form it is written to attach the copy of lease deed nowhere it is written that registered lease deed is required to be attached. 
My name is on records of Municipal Corporation Jabalpur MP, and on the khasra in collectorate record. I have been paying lease rent duly and getting repiepts of that in my name for this land.
My question is Do I have to really get Lease agreement registered for getting my land free hold ?
If this is so then I would have done it in 2011, but Municipal employee only stopped me. What should I do in this case, my name is already on the records and lease rent receipts which proves that lease is valid.