If you need to move the WP Store Locator data from an old to a new domain, then you can do this by using the Import / Export function from WordPress itself.

Old Domain

1. Login to your WordPress dashboard
2. Go to the tools menu and click “Export”
3. Select “Store Locator” and click on “Download Export File”

New Domain

1. Login to your WordPress dashboard
2. Go to the tools menu and click “Import”
3. Scroll down to the “WordPress” section and click on “Run Importer” ( or “Install Now” first )
4. Click on “Choose File” and browse to the exported file from the old domain
5. Click on “Upload file and import”
6. Assign the author and click “Submit”

All locations should now show up under Store Locator -> All Stores on the new domain.