Can previous year written off expense can be written back

Hi,

I need a clarification regarding the below mentioned Issue very urgently.

A company started for a project and expended some amount for the same in FY 2010-11 and due to some reasons the approvals for the project is not received and all the expense is written off to P&L in same year treating it as revenue item.

Now in FY 2011-12 they have obtained Approvals for the Project and Restarted the Project Work with already laid Base in FY 2010-11.

Now can the company capitalise the amount that it has witten to P&L in FY 2010-11 in the FY 2011-12 and what is the treatment in the books for the same.