That headline is pretty awful, becaused “erased” is a term that can mean a lot of different things to humans. The actual content of the article is critical to understand:

The first Trump regime went far further than its already disgraceful policy of separating families, instead erasing them as legal units by recoding parents separated by immigration enforcement from their children as ‘single adults’ and labelling their children as ‘unaccompanied alien children’ who were then put in shelters to face immigration court hearings alone – many of them still infants.

Trump’s system created intentional chaos, with officials admitting data was “corrupt” and grossly inadequate, leaving the number of children separated from their families still unknown – but at least three thousand in a matter of weeks – and the government admitting in court that it is probably impossible to reunite many of them.

The regime sent many of the abducted children thousands of miles away from their detained parents to foster this chaos and make separation more likely to be irreversible.

Unspeakably evil. This regime has knowingly separated children from their parents and made it difficult if not nearly impossible for them to be reunited again. I don’t like saying “it’s hard to understand just how evil this is unless you are a parent”, because it’s not true. Of course people without kids can understand it. But as a parent, man, this one is really getting to me. To try and get a better life for my kids only to have them ripped away and never seen again… I can’t begin to describe what I would do in that situation.