I apoligize for a slight alteration in this thread, but I haven't been able to get a solution in my own thread.
I have the exact opposite problem. I want to get copies of a particular custom post type from each site duplicated on the main site.
The custom posts are maps of each store location, as entered by the site admin on each stores site. I want a master map on the main site showing all store locations.
The only valuable information I can provide is that it appears in the php that the custom post uses regular text input fields to save meta data with the post.
I've also thought that maybe just getting the lat and lng meta data and creating a map with that would be faster on the server, but I have no clue about how to code either query, or loop.
Ipstenu (Mika), would you be able to advise me any one this?