Asset Depreciation

Dear Experts,

I need to change the useful life of the asset class “fixtures & fittings” from 8 to 5. We have already configured the asset class useful life for 8. The useful life change has to be done from Jan 2014.

When I change the useful life of a asset which is capitalized in 2008, and it will fully depreciated by 2013. The financial year is closed for 2013. How can I get the depreciation impact for year 2014 Jan for those assets through the standard depreciation run AFAB.

Thanks

Jeewana