That's why I am a Surveyor and not a lawyer or Judge. Yes there is an easement I will show it, however you need a lawyer to get his opinion on it.
In MA we do not need to record easements like other land records. Even in the Town if we had the frontage on one road but used an access easement over another, it would not be an issue. We often prepare 8-1/2 x 11" easement plans to attach to deeds.
The easement depicted on the original subdivision would still be in effect. The other easements are gravy.
Back to the easements. We once helped to subvert the Subdivision Control Law by creating a number of exclusive use areas that matched the occupation. (The lawyer did the subversion, we just drew the lines.) One person owned 20+ properties and developed them as a family compound. We prepared an 81-X Plan of Land with a few dozen Exclusive Use Easements. It did not require approval or a drawn out Zoning appeal and the owner did not need to change any of his improvements.
> > Many attorneys will do that in an effort to extract a favorable settlement as much money as their client is willing to part with, well knowing that their client has no case lots of cash and a sizable line of credit.