If a person is ordered to be rehospitalized for noncompliance with the treatment plan after a hearing under §33-6-609, §33-6-610 or §33-6-611, upon readmission the person shall be held under the authority of the original court order of commitment entered in the proceedings under chapter 6, part 5 of this title, and any other pending proceedings under chapter 6, part 4 or 5 of this title shall be dismissed.