It has come back to 141 Edition and will be updated once the newer version of it is released with the new BDV20b. Workingidentical to that of the previous version they do replace Captured marines but allied marines function different in this wad so it was the reason it could be returned. Enemies do loose contact with you for a time and when you return while still invisible they have no idea you are there until a shot is fired.
Return of invisibility Sphere