Client's 2014 passive loss carryforward did not carry over to the 2015 Form 8582.  Can I treat it as a prior year adjustment on line 27 of Schedule E?  Or, do I have to amend the tax returns from 2015 - 2017 to show the PAL being carried forward to all 3 tax years?  He has enough passive income in 2018 to absorb most of the 2014 carryforward loss.

Thank you in advance for your help