How to Fix and Properly Use Splines in World Partition:
- Enable Editor to Show Cells:
- In the editor viewport, turn on World Partition cell visualization to see which cells are loaded.
- Make sure the cells containing splines you want to delete are actually loaded.
- Load All Relevant Cells:
- Use the World Partition Editor (Window > World Partition) to manually load all cells with splines.
- If a cell is not loaded, you cannot delete or edit splines inside it properly.
- Delete Splines While Cells Are Loaded:
- Once the cells are loaded, select and delete splines.
- After deletion, save the cells (right-click cell > Save) to apply changes.
- Rebuild Splines After Changes:
- After deleting or modifying splines, rebuild your landscape splines to update the data.
- Avoid Editing Splines Across Multiple Cells at Once:
- Try to keep spline edits within one or few loaded cells to avoid duplication or conflicts.
- Clear Cached Data if Needed:
- Sometimes, restart the editor after deleting splines to clear cached references.
- Check for Known Issues or Updates:
- World Partition and spline tools are evolving, so check Unreal Engine’s latest documentation and updates for fixes or improvements.