Maybe you found once an island and thought, this would be perfect, if I only could change this or that.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161866
But there is no way in the game to open an savegame or ingame generated island in the Map Editor to make changes.

So let´s try this:
Modifying the ingame generated island ´UPPER ENDLESS SANCTUARY´
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161786
First we have to know the island numbering in the world map:
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161824
Our island has the number ´1_0´.

Next to know is where the generated world map island file location is:
\..\Steam\steamapps\common\Stranded Deep\Stranded_Deep_Data\Data\Editor\World\1_0\MAP_INTERNAL_PROCEDURAL_1_0

1. Now copy the folder ´MAP_INTERNAL_PROCEDURAL_1_0´
to the Map Editor's maps folder:
\..\Steam\steamapps\common\Stranded Deep\Stranded_Deep_Data\Data\Editor\Maps\

2. Start SD in the Map Editor and choose to edit islands.
In the island list open the copied island, named ´UPPER ENDLESS SANCTUARY´.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161889
The island can be now modified in the Map Editor.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161917
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161950

Save modified island and optionally change name.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161972
Quit Map Editor

3. Start Game
In the world map, mark the island you wanted to modifiy.
Now update the generated island with the modified island.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608161986
Save changes and play the game on the remapped island.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608162041

It works, have fun! :-)


Island injection
3b. Do not start the game. Copy first the modified island back to its original location, overwriting existant files.
Start SD directly in game mode and play. The modified Island is already there.
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=608162006
This way the game could generates itself endless nodes of islands, regardless seed hirarchy or rekursiv iteration limits.
Every node can have its own seed and any nodes can be simply connected to each other.

Steam Group - SD Map Makers
http://gtm.steamproxy.vip/groups/sd-map-makers