If you SOLD the property in 2018, it seems like you may not have fully told TurboTax that you sold it. If you had done it right, the rental should NOT have carried over, and the Passive Losses would have been fully allowed in 2018. You will need to amend 2018 to correct that.
If you converted it to personal use, those Passive Losses are suspended until you sell the property. You are correct, TurboTax does it wrong by deleting the proper forms (Form 8582). However, if you keep good records, you should be able to claim those suspended Passive Losses when you eventually sell the property.
