bin/map: collision_suffix: Setting back to _alt to test if _merge caused the SpeciesLink slowdown. SpeciesLink contains a huge number of equivalent columns due to each DwC term being present with namespaces for all versions of the DwC schema, and these columns can be combined either using _alt or _merge. _merge is only useful if the values in different versions of the same DwC field are different, which is not likely the case.
bin/map: collision_suffix: Setting back to _alt to test if _merge caused the SpeciesLink slowdown. SpeciesLink contains a huge number of equivalent columns due to each DwC term being present with namespaces for all versions of the DwC schema, and these columns can be combined either using _alt or _merge. _merge is only useful if the values in different versions of the same DwC field are different, which is not likely the case.