Will passive aligner in invisalign treatment pull my teeth back together?

I had a mid correction and on aligner 5 the upper ones moved to be passive (the bags say passive). I was in the impression that my teeth will not be moving anymore after that, and we will just wait the lower teeth to be done. However, last visit, when I went to get aligner 6,7 and 8, she said the upper teeth will now pull back in and closer together. She made a gap between my front teeth which worries me. I called her later and she still claims that they will now move so that gap will be gone.