Tax Upload Interface

We are trying to setup Tax book for the first time. We have been using FA Corporate Book for the last 2 years. We want all the existing assets to be transferred from Corporate Book to Tax. But the problem here is that the accumulated depreciation for our Tax is different than the Corporate. So if i run the initial mass copy, i get the same accumulated depreciation to Tax book also. We don't want this. I am just wondering if we can use the tax upload interface instead of running the initial mass copy. This way i can bring