Sorry I was busy, only got around to reply now
Did you change the level name for all objects in the level too?
Stuff in Mods\%yourMod\Levels\%yourLevel%\Characters, Items, Terrain, Triggers, WallConstructions may have level names embedded in them.
Easiest way to replace that I know of:
- Open file in LSTools
- File -> Save as LSX ... -> save somewhere
- Open LSX file with notepad++ -> Replace "%oldLevelName%" to "%newLevelName%" -> Save
- LSTools: Open the replaced LSX -> File -> Save as LSB ... -> overwrite original .lsb file in the map folder
- Repeat for all map .lsb files