I have a large dataset of cities, albeit with some unreliability where a province or street or alternative city name may be listed. When I go to fix those errors, I find that many not-at-all-obscure city names do not show up as options when typing a replacement for "Unrecognized." (ex: Perth, Ningbo, Puebla, Brasilia for just a few). It would be a mammoth task to look up Lat/Long for all these, and it seems wasteful when they should be automatically read. Am I misunderstanding this feature fundamentally? Why would so many cities not show up? Any explanation would be hugely appreciated. Thank you!