I don't know about MD, but usually you don't need to make a separate state entry unless the partnership had income from running a business in a particular state (or had tax-exempt from a particular state). Then you may need to file a non-resident return in the business state and will probably only pay tax on the portion of income that came from that business/rental.
Some states do have odd taxes. NH taxes on distributions from partnerships and not any of the numbers on K1s and not on capital gains or return of capital. So that can require a special state entry. But that is unusual.
One thing you can do is to look at your state forms and verify that the k-1 income shows up somewhere. Sometimes the states just take your federal AGI so you know it will be in there.
You also could check out https://www.marylandtaxes.gov/forms/20_forms/510K-1.pdf and verify the 510K-1 in TT forms mode since you are using the windows download version. (A great idea because it is so easy to see the forms and to right click on a number and see where it came from - choose "data source").
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