@dawn-carlisle80-
The paragraph that you quoted from the PA DOR web site is about someone who is required (by the employer) to work remotely from another state. You have not clarified why you are working in Massachusetts. Is it because your employer requires you to do that, or is it because you prefer to live in MA and you don't want to move to PA? If it's because of your own preference, then what you quoted from the PA DOR web site does not apply to your situation.
