Not sure if I missed this somewhere but haven't had any luck in getting it to work. Have several locks on a few distant tiles that I prefer to unpin for performance reasons. If I make adjustments to these distant pinned titles with terrain or other affected objects and create a lock to encompass a majority of where the adjustments were made, etc.., lock it, and then unpin the tile(s), and then test it in editor or build, the locked title(s) revert back to original generator output. Using Unity 2020.1.9f1 and MM2 2.0.8.