I finally found a news report with an update about the children.

PBS Newshour: Fewer than 200 migrant children remain separated from their parents

I feel like the headline is misleading. What they actually mean is that fewer than 200 are eligible to be helped by the class action lawsuit.

There are an additional 220 children who are deemed no longer a part of the class-action lawsuit. If you add that to the 182 who are deemed part of the class action that is a total of 402 still in government custody. to my mind that isn’t brilliant progress, the article on September 4 said that 416 remained in custody. Although it feels like they are not necessarily comparing apples to apples from week to week.

I have not been able to find out what happens to those 220 kids.