Loading Bonus Depreciation Reserve in Tax Books

We have bonus depreciation reserve calculated for Tax Books in our Legacy system. We want to load this data in Oracle FA.

We did conversion of assets in Corp Book. Performed Mass Copy. Then we were thinking of using FA_TAX_INTERFACE to update this value.

However, this table does not have any separate column for Bonus Depreciation Reserve. There is Bonus Rule column in this table but if I use it, I am getting incorrect value of Bonus Dep Reserve.

Most of our Assets have bonus depreciation of either 50% or 100% of total cost. (E.g. if asset has cost of $100, then bonus dep reserve is either $50 or $100.) However if I define a (one time) bonus rule using 50% depreciation, it doesnt give me $50 bonus depreciation for asset of $100 cost.. Rather it gives me some odd value.