Hints for the WordPress Store Locator Plus stand alone, self managed plugin with Power add-on. Import features available with the Power Add-on
If checked , use the faster MySQL Load Data method of file processing. Only base plugin data can be loaded, see the approved field name list.
This feature uses the MySQL Load Data command and is much faster than WordPress / PHP CSV file parsing, with the typical Google Geocoding limitations on performance and record counts (if you are not supplying, filling in the latitude/longitude data fields). This feature will only import basic location data. It does not import extended data fields or category data. If you use this along with per-entered latitude and longitude values you can import 100,000 locations in less than 10 minutes on a basic web server. The column headers must be included in the file and must match the basic fields. You do NOT need to include all columns.