In CT, if the marker was set by a licensed surveyor, then it is illegal to tamper with it in any way...... even if it isn't in the correct place. Surveyors will not remove a marker even if it is located incorrectly, unless they were the one that placed it. They will show the marker on the maps that they draw and indicate that it isn't correct, but they will never remove a marker placed by another surveyor. If they don't know who placed it, it is assumed that it was done by a surveyor. When my land was surveyed, the surveyor placed some pins that were off set in the woods, so if the originals were ever pulled, he could reset them without any problem. The day after he put the originals in on the boundary, someone pulled them. He put them back and set them down a couple of inches below grade, so they couldn't be pulled again. Through the freeze and thaw cycles, they came to the surface and were pulled again. The next time that they will be set, it will be in concrete, and I would like to see how they will pull those. Just because it is illegal, doesn't mean that stupid people will ignore the law.
Dusty