Summary Template - mutilple year budgetary control with the same template

We are a public sector organization and have a need to have short term multiple year budgetary control summary templates.  Here are the facts

1) At year end for any fiscal year (e.g. FY2013), we need to FY 2013 summary template to remain for 3-5 days to allow clean up processing of purchase orders with proper funds checking in place

2) simultaneously to 1 for the new fiscal year (e.g. FY2014). we need a FY 2014 summary template in place to accurately control funds for the new year

3) The summary template for both years have the exact same template definition for the accounting segments