Okay. Thanks @tagteam. I just spoke with Turbotax Support, and they said that I would need to file the amended returns, and the form 3115 with each amended return for 2017 and 2018. I am not sure that this is right. I will probably need to talk to a CPA, to get this set right.
Just one question: I hope I will still be able to get the tax refund for 2017 and 2018, based on the depreciation deduction, even with the form 3115 and no amendments?
