location:map_listing from related entries

I have a site that uses multiple locations shared across several different maps; Each location must be listed in a specific order.

So what I've done is to make a single locations section that contains all the info and lat/lon data for each location as an entry and then for each of the sections where the locations are to be listed, i've used a suggest field to grab the locations limit one per entry. This lets me create the list in the order needed.

I'm having a problem creating the map from only the tour locations in the suggest field.

This shows all the locations:

 {{ location:map_listing starting_zoom="13" from="locations"
   locate_with="where"
   clusters="false"
 }}
  <h3>{{ title }}</h3>
{{ /location:map_listing }}
{{ location:start_maps}}

How would I limit this to just the locations that are associated to the segment of the tour entries. Hope this makes sense.

title: Tour Location

fields:
  map_number:
    display: Map Number
    type: text

  where:
    display: Map Location
    type: location
    allow_geolocation: true

  location_desc:
    display: Location Description
    type: text

title: Tour Entry

fields:
  content:
    hide: true
  tour_location:
    display: Location
    type: suggest
    create: true
    max_items: 1
    content:
      folder: locations
      label: title
      value: url