Non-resident OK income not showing up on OK return
I am retired, married filing separate, and over 65. I am taxed as a full-year resident in Maryland. I also have a small amount of income from mineral rights royalties in Oklahoma. On Schedule E, the address listed for this income is Oklahoma, and this shows up as Oklahoma income in the "Other State Income" section of TurboTax.
However, when TurboTax generates my state returns, the Oklahoma Nonresident/Part Year Income Tax Return (Form 511-NR 2025) has an X in the box that says "Not required to file - Place an X in this box if you are a nonresident whose gross income from Oklahoma sources is less than $1000" -- even though I received more than $1000. The amount I received doesn't show up on the OK state return forms anywhere -- the form is basically blank, other than fully refunding me the small amount that OK withheld in state taxes.
Whereas in previous years, Maryland and Oklahoma each taxed me on that portion of my income generated within each of their states, this year it looks like all my income is counted as Maryland income, including the Oklahoma mineral rights income.
Is this correct? It doesn't look right to me and I'm afraid to file it like this without understanding why. Thank you for any insight you can offer.