Opinion: You have a mess. You'd be better served by having your taxes done by a local professional this year.
(The one DC income/withholding while you were a MD resident, needs to be declared as MD income without MD withholding, and zero DC income with DC withholding for that particular W-2. Some of those states/DC have special procedures&forms for that situation...but on a Part-Yr situation, I have no idea how that works out)
.....and NO, you cannot have a refund from one state auto-transferred to the other. Refunds and taxes owed for different states...have to go thru you.
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____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
