Me. Stat. tit. 4 § 157-C
A Judge or an Active Retired Judge of the District Court may be assigned by the Chief Justice of the Supreme Judicial Court to sit in the Superior Court in any county and when so directed has authority and jurisdiction therein as if a regular Justice of the Superior Court; and whenever the Chief Justice of the Supreme Judicial Court so directs, that judge may hear all matters and issue all orders, notices, decrees and judgments that any Justice of the Superior Court is authorized to hear and issue. [1999, c. 547, Pt. B, §4(AMD); 1999, c. 547, Pt. B, §80(AFF).]
No Judge or Active Retired Judge of the District Court so sitting in the Superior Court may act in any case in which that judge has sat in the District Court nor in which that judge otherwise has an interest. [1999, c. 547, Pt. B, §4(AMD); 1999, c. 547, Pt. B, §80(AFF).]
The order of the Chief Justice of the Supreme Judicial Court directing a Judge or an Active Retired Judge of the District Court to sit in the Superior Court must be filed with the Executive Clerk of the Supreme Judicial Court, but need not be docketed or otherwise recorded in any case heard by that judge. [1999, c. 547, Pt. B, §4(AMD); 1999, c. 547, Pt. B, §80(AFF).]
4 M.R.S. § 157-C