To modify an existing (story) level, first add a dependency to that project (Project Settings > Dependencies > add a dependency on Origins). Then open the level browser (Ctrl+O) and enable the "Show Inherited Levels" toggle at the top right. Fort Joy is named FJ_FortJoy, Reapers Coast is named RC_Main etc.

The first time you load an inherited level it will show a messagebox to confirm if you want to modify an existing level, just press "ok".

Last edited by Larian_JB; 20/09/17 02:30 PM.