Consider this case, we have a score summary over 3 competitions, and not everyone participate in this cup, we take competitors out simply by withdrawn them from the score summary that contains all uniq competitions over the 3 competitions.

If for example the winner of a competition isn't participating the cup this score will be left out.

This is fixed by using Recalculate rank, we had this option before, but it was used only with reranking when we take best results for in a competition or group.