They could try to collect, but they have no legal basis for it anymore.
They can call and ask you for money, but if the SOL is up you don't legally owe it.
They can try to sue, but you will have SOL as an affirmative defense and the case will be thrown out in about a quarter of a second.
The SOL will go by your DOLA and it doesn't really matter (legally, maybe not practically) how they sold it or reported it.