how to apply unplanned depreciation in tax books when method is table based?

Hi,

We would like to do some depreciation for an asset in Tax books. However, since the method is a table based method, the unplanned depreciation feature is not available for this in the book window. We did change it to STL and applied the unplanned depreciation. Depreciation was successfully applied but however, on changing the method back to original i.e table based, the adjustment done was disappeared. Why does it disappear and where did the transaction go ?

Could anyone help by throwing some light on how to do depreciation in tax book for table based method. Also, kindly let me know on how to manually do a depreciation for such a case.