Idaho Const. art. XI, § 14

If any railroad, telegraph, express, or other corporation, organized under any of the laws of this state, shall consolidate, by sale or otherwise, with any railroad, telegraph, express, or other corporation, organized under any of the laws of any other state or territory, or of the United States, the same shall not thereby become a foreign corporation, but the courts of this state shall retain jurisdiction over the part of the corporate property within the limits of the state in all matters that may arise, as if said consolidation had not taken place.