Amending incorrect "Placed In Service" on Rental Property

I discovered that I made an error in the "Placed In Service" date for a rental property in two most recent prior tax returns (the date used in both those cases was significantly earlier than what it should have been). I believe this means I have to amend those returns. Given that this resulted in a net increase in the calculated depreciation I need how does affect the passive losses carried over for the current tax year? Can I complete filing the return for this year before amending prior years? Should I adjust the passive losses carried over as they would be if the right placed in service date was in use?