Hello Andi,
Yes, it is just a visual update. I had 1:1 class with Petko yesterday, which was great by the way.
So he explained that this is just for the traders to see how the new strategy is different from the previous one generated. It stays 5 sec and it disappears. But the one that disappears remains in the collection. It disappears just from the graph.
Also, there is the could change the Backtest Output which shows the different parameters. Same with the Optimzer:
