The Locus Maps app allows downloading maps and using them offline. When selecting a map region, the zoom levels have to be selected. I've downloaded a map at a specific zoom level (23) expecting that I will be able to use lower zoom levels as well (1-22).
However - I can now only go through the map at zoom level 23, which is awkward.
Is there any way to add additional zoom levels to those maps already downloaded, without having to download the entire thing again from scratch (it's big)?