Joint agreement amongst all the legal heirs to avoid partition of property inherited through a will.

Our mother left a single house property to us two brothers through a will. She died in October 2001. We got the Will registered by 2004. In the Will, our mother first states that she bequeaths the property to us two brothers. Next she states that "they (i.e. we) shall divide the above house" into a North and South parts, each to be inherited by one of us. (Detailed room wise partition also mentioned in will). Lastly, she states that we are "entitled to use and enjoy the said property at their (meaning us) own will" after her death. However, we two brothers do not want to partition the house. We have agreed to live amicably in the said house jointly, without partition. We have been living jointly and continuously in the said house before and after our mothers death (Total of more than 27 years). We were paying the Corporation Building tax in our mothers name all these years. (The land revenue dept has already registered the land in our joint names at the time of resurvey, and the land tax is being paid jointly by us). Now we jointly applied to the Corporation to transfer the Title of the building to our joint names and submitted our mothers death certificate and Will. However the corporation has responded that the will demands partition of the house and that we should submit detailed partition plans of the building and also apply separately. My question is, when the only 2 legal heirs do not want to partition the house, can the corporation demand partition of the house ? Is there any legal precedent ? What can we do to make the corporation register the building in our joint names, without going through the web of partition? (We are 59 & 66 years of age at present and wish to continue to live together amicably and jointly without partition). (The quotes are as written in the Will.)