If, after an adversary hearing, the court finds that there was no reason for the children to be removed and they are returned to you, that would be the end of the case.
If the case has proceeded on a service plan, and children had been returned on a monitored return, then the case would end during the monitored return.
However, you should absolutely expect frequent check-ins by both CPS and CASA, (Court Appointed Special Advocates).
If the court has signed an order saying that the case is now closed, all the other parties are dismissed, and the parent is now the managing conservator of the child, you should not expect any check-ins.