Yes, TT automatically carries the NEC1099 income, as well as the W2 , to the state return.
Checking the box will allow you to "back it out" "if your other nonemployee compensation is not taxable as PA income (pretty rare).
See https://www.revenue.pa.gov/FormsandPublications/PAPersonalIncomeTaxGuide/Pages/Gross-Compensation.as...
