1. When a child has been placed with the petitioner for the required six-month placement period, the person conducting the preplacement assessment of the adoption or other persons authorized to conduct assessments pursuant to section 453.070 shall provide the court with a postplacement assessment. The specific content of which shall be determined by rule by the children’s division of the department of social services. The postplacement assessment shall include an update of the preplacement assessment which was submitted to the court pursuant to section 453.070, and a report on the emotional, physical and psychological status of the child. If an assessment is conducted after August 28, 1997, but prior to the promulgation of rules and regulations by the department concerning the contents of such assessment, any discrepancy between the contents of the actual assessment and the contents of the assessment required by department rule shall not be used as the sole basis for invalidating an adoption.

2. No rule or portion of a rule promulgated pursuant to the authority of this section shall become effective unless it has been promulgated pursuant to the provisions of chapter 536.