Reclassifying Dep Method and Rate should not calculate earlier periods to Dep adjustments

Hi,

When Reclassifying  the depreciation method and depreciation rate in the current period for an asset,
 the system passes the adjustment depreciation for the earlier period also.

I need that when I change the depreciation method and rate in the current period system should start
calculating new depreciation from current period onwards only and should not calculate adjustment depreciation
for earlier periods?

Rgds

Raju