Which form to report replacement of condemned rental?

We had a rental that was condemned in 2016.  We purchased the replacement in 2019 and need to report this exchange in order to defer gain.  The condemnation process took so long, that I did not file the election in 2016, but I did remove the condemned property from my schedule E and the depreciation schedule too.  I need to know which form to use the 1033 exchange rules to tie the replacement property to the condemned one and pub 244 is greek to me.    HELP!