What are the implications if you mix up the Station line (which has the Station on the Survey line) with the actual boundary line, that is, show the Station line on the plan (which is away from the boundary line) on the boundary line itself? The reason for the survey was to subdivide a block from the parent title.
This is an actual case which led to the distance between the actual Station and the intersection with the boundary line being reflected elsewhere on the survey line as a balancing item.
If you br0ke it, you must fix it.
You still have to fix it, only now you can get paid to fix it.
For those original monuments found after decades of being set I always go with where the monument is located.
Any other situation takes following subdivision block restoration and occupation.