Hello Faraz,
Welcome to the Forum! Yes, Petko’s courses made many lives easier. I had been trading many years before that and never had constant success.
Anyway, your question is quite logical. I got your point, and I think there is a way to go around it.
If you run the Generator on the second day, just don’t delete the strategies from the collection. This way, the correlation analysis will apply.
So, for example, if you have ten strategies from the first day, add them to the portfolio but leave them in the collection. Write down in excel the IDs for these strategies, so you will recognize which are the new ones from the second day. And the correlation analysis will do its work this way.
Give it a try and let me know. I never thought about that.