As of 7-10-2019 the game would leave the Poi's, spiders nest, etc, on the map and now when I leave the area now it does not. Did I turn something off? Look on-line and found no answers and I'am new to this game. I have deleted the game game and reinstall it and the problem is still there.
https://empyriononline.com/threads/pois-with-mapdistance-not-shown-on-map-after-discovery.52291/ Apparently this is how things are meant to work now, though I can't see the logic in discovered POIs not being saved by your mapping system. Bookmark anything without a core you want to be able to get back to.