It is my understanding, the people enrolled under the old rules are financed under the old rules. This is why the article states they were put on Medicaid immediately and did not have to wait to 2014 like the persons on expanded Medicaid. This is called the “woodwork” effect”, people now becoming aware they were eligible for an entitlement. There are 1.2 million in Washington state on Medicaid, so I expect their budget increased by 5.5% (66k/1.2M).
Point taken.