It is alleged that those in the facility are replaced by duplicates in their own timelines, both to prevent their absence being noticed and to retain the integrity of said timeline. These duplicates are designed to cease engaging in behavior the wardens consider to be criminal.
However, I find this claim difficult to substantiate. A number of individuals, myself included, are from an earlier chronological point than others who are present from the same reality. Those from the later point in time report no changes in behavior, and a continuation of supposed "criminal" action, in those who were brought from the earlier point in time.