State income tax withheld in the wrong state last year

Issue with my 2019 W2 income, my state income tax was distributed to Massachusetts yet my primary residence address is in Connecticut (residence, where my car is registered, license). We have offices in both states so I do some work in Boston.  Due to the fact that on the top of my paystub had my Connecticut address, I overlooked that my whole entire year I was paying to Massachusetts (former residence). 

 

So according to my gathering, I need to file a non-resident tax return for Massachusetts, does that mean Massachusetts will expect any of my income? Will they just refund what I already withheld and transfer it to Connecticut. 

 

I also have a rental property in Florida, will this also require a non-resident tax return?

 

Thanks!!!