I am in a similar situation where I have couple investment properties with missing depreciations. Following a similar advice I did an amended return for 2019, but later realized that I should be doing form 3115 instead along with my 2020 tax returns. After some reading (including this forum which was very useful) I am ready to submit 3115 with my 2020 returns (claiming all missing depreciation through and including 2019), however not sure how to handle the amended returns for 2019. I sent it over a month ago but IRS still does not have any information on this. I am inclined to just go forward with my 2020 return (including form 3115) . As I understand there's no way to cancel the amended return once you sent it to IRS, does anyone know how to best proceed? Thanks all!
