W-2 shows incorrect state

Company that I retired & receive a pension from changed payroll companies during the year. For some reason, the company put NJ as my residence for 3 months & withheld NJ state tax. I haven’t lived there for 25 yrs. I thought we had it straightened out & my current state of FL has no state tax. I received W-2 this week which shows 3 mos pension as NJ income. Does thus mean I need to file a NJ return now? I don’t care about getting the state withholding back, it wasn’t that much.