I'm concerned my Maryland state return is incorrect. Should I be entering Pennsylvania income, which I've already reported, as non-Maryland income?

I was a part-year resident, moving from PA to MD in 2016. I have already reported income earned in both states on my federal return, which was migrated to my Pennsylvania return but it is not clear that it was also migrated to my MD return. When asked to enter non-Maryland income, I'm inclined to enter the amount I earned while living in PA. However, this makes a substantial difference and takes me from owing to actually receiving a refund. Please help clarify this situation.