You’re in good company; here’s the feature request post for this issue:
The Wildbook release for 10.8.0 will be dedicated to bulk import improvements and will include letting users update locations IDs in a bulk import without having to do it manually.
In the meantime, if you want to change the location ID on a bulk import to the same single location, give me the link to the bulk import and let me know what the new location ID should be and we can fix it for you.