force all places to show in map

I don’t know if this is multilocations or core, but here goes anyway:

In my custom homepage, and also on a dedicated “map” page, I have a shortcode as follows:

[gd_homepage_map width=99% height=600 autozoom=true marker_cluster=1]

I have used CSS to remove the filtering options normally seen. Now it only shows the map, plus the standard Google maps controls and obviously pins (or multilocation symbols) for the places I have in the GD database.

What I need is for the map to always show all the places I have in the database, and never pay any attention to any filtering. Unfortunately it is currently filtering.

The filtering happens when a visitor clicks on one of a set of links I’ve set up on another page. On that page I have manually listed a number of towns/cities and a number of counties (states), with links similar to the following:

<a href="http://www.domain.tld/places/united-kingdom/county1/">county1</a>

Clicking on this link shows all the places in the county in question in a listing page. This is good and what I want.

However, it also affects the maps, with the places shown being limited to those in the county in question. And I don’t want this.

And as I said, I want the maps always to show all places, not filtered places.

Is there a way to do this?