L3-16 Multimaximizer - Update wiped out previous settings

I just updated to the L3-16 Multimaximizer which then seems to have deleted my previous L3 versions. Unfortunately, it has also deleted all of my settings in Reaper. Please tell me there’s an easy way to retrieve my settings so that I don’t have to re-do every song and every instrument. Also, the new L3-16 is missing all of the great Presets from the previous versions.