I recently sold some property where the buyer had their own survey made. It didn't match the survey the landowner had made just a few years prior to the sale.
The buyer's surveyor marked a corner one day that was very different from the existing corner that had been established. The next day he came back and moved that corner 38 feet from its previous location. It was still different from the previously established corner of the earlier survey.
When the deed was drawn up for the sale, the legal description on the deed didn't match the surveyor's description. I was scolded by the closing attorney who threatened to call off the sale if I pushed the issue. I'm no surveyor or attorney, but I was taught to read plain English, and the deed of the sale included a parcel of the property that had already been sold years earlier. The buyer's survey didn't include that parcel.
Two corners out of six are matched by the earlier survey and the new survey. Four of the corners are marked in different spots by the two surveys.
I'm glad I'm no longer a part of that mess. New surveying technology doesn't match the old that surveyor's used to use and that's a problem. In addition, lawyers who write legal descriptions are not always paying attention to the details or understanding what they are writing.