OK - so it looks like you can get Cycle Markers when created within a Marker Track to show up, but LR locators / cycle doesn’t show in the Locators tab - everything is always just greyed out in there.
Reading the manual I think this is by design but it’s very strange - why not show the LR locators range and let this info be added to the export and shown in the Queue? This way you could set the locators around a section A, add the export to the queue, move the locators to section B and add to the queue etc.
One problem I’m definitely having is graphics based in the Inspector -
The arrow often won’t open up for you to see your markers - you have to use the separate Markers Window or toggle the inspector window.