It's unclear to me why these were tagged the way they were in the first place; Grand Manan was tagged as admin level 2 (the international border is on a separate boundary to the west, so this is obviously not correct), and part of the shoreline along Saint John was tagged as admin level 4 (which is used for provincial boundaries... and there's already an existing admin level 4 provincial boundary (NB-NS) across the bay of fundy.)

I reviewed the wiki for guidance on tagging maratime borders as well as compared it to the tagging scheme for nova scotia to the south... and concluded that the tagging for these shoreline boundaries is only applicable to the local counties/municipalities/parishes so I decided to remove the admin level tagging altogether to make it consistent with the rest of NB's tagging scheme. 

Feel free to revert this if you think I've made a mistake. I did NOT touch the international border. 

Cheers