Legacy asset depreciation.

Dear All,

In my client place they are having existing asset details by using stright line depreciation rate. for example Bookvalue of asset is Rs.1000000 for that they are following 10% straight line depreciation for the past two years . Now for uploading the assets they r giving asset details with dpreciated value for two years together for example Rs.20000. Now i want to upload this data in sap , the asset value is reduce to Rs.80000/- Now i want to use the stright line method of deprecaition same 10000 Rs. also.

Pl guide to

girija