SolarWinds advise using the following guide to bulk import geolocation data via custom properties.
Place objects into the map using custom properties
The problem is that this process does not allow for the Location field (WorldMapPoints.StreetAddress in the database) to be updated with site data.
For example, this test loaded 7 sites but you can only import the longitude and latitude details with no fields for site name. Each of these sites needs to be individually updated (time-consuming if lots of sites) or updated via a database script (not suitable for everyday users).

I propose that the custom property import feature allow for values to be imported into this location field.

This request also ties in to a similar request - allowing us to use custom properties instead of the SNMP Location field for the automatic geolocation feature.
(Sorry if there is already a feature request for this; I fail at thwack search if there is)