What I mean is that I have done three types of compensation schemes on my oww and If I run the simulation I got parameters for plotting just for one scheme that I am working on. But when I have a look at the prepared project in optiwave folder there I see all parameters for different schemes when I run the project. I have done in that way : I have finished first scheme then I have saved the file and then on the same project I have changed the required things and saved again and so on . Is it not duplicating a layout ? that should be my problem or what is your opinion?