Hi Peter!
I am not sure what you would like to achieve. In our official demo of drill down in Highcharts Maps (
https://www.highcharts.com/demo/maps/map-drilldown) you can see, that after drilling down breadcrumbs are showing up, leading the way up through the drill down levels and it is informing the user where he drilled-down-to.
If I didn't answer your question, could you describe it more precisely? Maybe with some help of images or gifs - it could be useful for me.
Regards!