I did: Optimization Results tab > "Set these Parameter Values as Default for the Strategy". This correctly set the default values but it seems to have deleted all of the comments within my constructor, surrounding my CreateParameter() calls. I had many comments there, some being other CreateParameter calls temporarily not in use. Is there a way to prevent this from happening?

I cannot use Preferred Values, since I need to set the parameter values to work with all symbols, and there does not appear to be an option to assign Preferred Values for all symbols based on either a row or highest metric value.

For example, you can leave comments in any other part of the class like Execute() body.