With no small amount of background political support from Ozpin, the respective leadership of Vale and Mistral tentatively welcome Starlight and accept their technology. Officially, Vacuo does as well, but there is considerably more uncertainty and resistance from their scattered and largely self-sufficient communities. The Faunus of Menagerie also seem reluctant to trust in Starlight's benevolence.
Mapping Remnant proves fairly easy for Starlight's technology, though there are a handful of places that seem to resist simple scans. Probes go missing in a handful of cave systems, small pockets in the ocean depths, and at least one valley in Vacuo near the edge of Grimm territory which seems to actively erase itself from biological memories. (This effort also reveals that there are some very large Grimm in the ocean). Other notable terrain features include a set of floating islands (hypothesized to be a source of gravity Dust), a verdant Vacuan jungle, and a massive network of tunnels on several continents, home to burrowing Grimm.
The pools of Light and Darkness are surprisingly easy to find, given a bird's eye view of Remnant. The Well of Light sits at one of the most potent magical hubs on the planet, a large uninhabited island northwest of Menagerie. The Well of Darkness, it turns out, is not far from Salem's castle on the far northwestern continent.
With the political support of national leaders, rolling out backups to major population centers is a fairly straightforward task. Within a few months, an estimated 80% of Atlas, Vale, and Mistral and 40% of Vacuo and Menagerie have been preserved.