Rodrigo, I verified that when you import a CSV file to import Venues, the geolocation lookup should happen. If you’re using our CSV Import functionality, your Venue addresses should already have lat/long data and therefore you wouldn’t see the notice like “some Venues are missing geolocation data, click here to obtain it.”
Does this clear things up at all? Did you try this and experience something different (like Venues not getting lat/long assigned)? If so, please provide me a copy of what you’re importing as Venues via our CSV Import functionality.
Thanks.