Hi @SKazami
Instead of copying your island by migrating your assets; open your project folder. If you can’t find your project folder manually, you can click the “browse” button when selecting a project to open in UEFN instead of clicking open. This should open all your project folders.
- Select the project folder you want to copy and copy it. (This is also a great way to backup your projects before editing big things like landscape)
- Open the copied project in UEFN and delete your landscape.
Hope this helps. 