If you are filing MFJ on federal, it is easier to file MFJ on MD as nonresident and remove the non-MD income. MD begins with the federal AGI. A nonresident can remove income not from MD to file based on MD taxable income.
Filing as MFS when you are both non-residents is acceptable when the federal is also MFS. There are a few states where MFS is better, MD is not one of them.
The nonresident instructions state to follow your federal return and indicate MD income.
[Edit 4/1/2023 |8:48 AM]
@snowprairie
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