If I understand you correctly, I think you can see a similar case with herring gulls where the recent split left many old observations with IDs of “European Herring Gull” which don’t match the identifiers’ original intentions of L. argentatus sensu lato (e.g. obs 1, obs 2). At the time, that ID had a broader meaning.
Explanation here:
It’s unclear to me if that’s a recommended practice to reduce server load or if there’s another reason it’s being done this way.