The MSD Scene Compactor is a tool used to cleanup scene from unused objects, cues, material, fixture etc.
It is important to understand that every objects or fixtures imported in a scene are imbedded in the file.
More important is the fact that when you delete an object or fixture from a scene it is still in file, it's only flagged as deleted.
So completely delete these fixture or object you must use the scene compactor.
You can also use the Scene Compactor to retrieve deleted objects or fixtures by checking the Reset Deletion flag box.
It is safe to use it, a copy of the scene will be create with the word " Compacted" added at the end of the filename
Example this file name MsdDemo.scn will be renamed MsdDemo Compacted.scn
