First, since you're commenting on multiple notes, I will assume that you are local to MA and aware of the MassGIS L3 parcels dataset, https://www.mass.gov/info-details/massgis-data-property-tax-parcels  which has been rebranded to "Tax Parcels" since I created the note, although L3 clearly shows up in the database scheme.

I don't quite understand your question; the note said the map was probably wrong.   Perhaps you meant "is the map still wrong or has this been fixed in the intervening time"?

As my note said, the geometry of the landuse=conservation/boundary=protected_area closed way around Nashoba Brook does not match up with the geometry in L3/Tax Parcels.   Earlier, a local mapper in Acton cautioned me that sometimes the MassGIS data was wrong (certainly true) and that he had hand-adjusted the OSM data to be better, by looking at deeds and walls.   Thus I was reluctant to overwrite.  However he is no longer actively mapping in Acton.   So this needs someone with some on-the-ground familiarity to give it a good look and adjust.  I'll try to do that because I no longer feel a need to defer to someone who is more local in Acton (I'm one town away).