It is possible to add 3rd party maps to Fenix watches and handheld GPSMAP units. Topoactive maps are too general, not optimised to particular activity and do not show regional trail marking. Having possibility to render 3rd party maps convinced me to buy my first GPSMAP 60CS over 20 years ago and also to purchase my latest Fenix 7 watch.
However, I would like to have these maps in the Garmin Explore app to use them for planning courses and marking waypoints. So, I would like to take 3rd party img map file and copy it manually from my Fenix to my mobile and then use such map in Garmin Explore. Certainly better would be an automatic transfer from a connected watch to the Garmin Explore but I can copy it using my laptop too.
Does anyone knows if it is possible?