Tommy_The_Gun wrote: »You might want to check "Lost Treasure" addon.
https://www.esoui.com/downloads/info561-LostTreasure.html
It marks a location of a treasure chest on your map, as long as you have treasure map in your inventory. As for the "saving" location once you find treasure chest, I dont think it does that. I think it only shows where the treasure chest is only if you can actually dig it up (you have a treasure map in your inventory) which makes sense .
This addon also shows crafting survey locations.
The other addon that does something similar is Map Pins
https://www.esoui.com/downloads/info1881-MapPins.html
But it has slightly more stuff in it.