This is related to a similar post:
https://premium.wpmudev.org/forums/topic/one-map-to-rule-them-all (display all content network wide for all locations on the main site)
This post is slightly different and technically seems to be profoundly different.
The issue is this:
From a network sub site ( http://cronulla.tradr.com.au ) I cannot display all geo-tagged content for a specific location.
Currently, I am able to specify zoom, lat & long in order to fix the map at Cronulla.
Directory posts are showing up from the main site but have no link to the directory listing.
Also, in the future will be trying to display all activity based in Cronulla including:
- Marketpress products
- Network shops (blogs)
- Buddypress Profiles
- Buddypress Activity
The main point is that all this information is likely to be sourced from the main site and through the powers of post indexer appear at this network sub site.