I had the same issue while trying to switch from TaxAct and entering assets purchased years ago. I ended up just entering total previous depreciation (bonus/not 179) plus previous deprecation in the section where they ask for prior depreciation excluding 179 and bonus depreciation. The calculations were then correct. However, when I went through the Review process, TurboTax started asking about bonus deprecation and bonus AMT depreciation for each asset. I started putting in the correct numbers for each asset but now have to go through all the assets again. I've concluded that while TurboTax is great at importing stock transactions (as long as you use a brokerage that Intuit can import from directly), TaxAct is much better at handling rental properties. In addition to depreciation being easier to deal with, you don't have to go through question after question to enter your expenses.
