Based on your facts, it would appear that MD will continue to be your state of residency (domicile). As such, you will continue to file as an MD resident.
You will also be required to file a CT return, but you would file this as a nonresident. I would also assume that your employer would be withholding CT tax as well.
When it is time to complete your tax returns, complete your federal first and then CT. Finally, complete your MD return and include form 502CR. Your MD return will report ALL your income, however, form 502CR will provide a credit for taxes paid to other states, in your case CT. This credit minimizes your paying tax on the same income twice. You will also be required to attach a copy of your completed CT return. See the attached discussion from the MD website.
http://taxes.marylandtaxes.com/Individual_Taxes/General_Information/Tax_Credits_and_Deductions/Incom... II - Reciprocal States
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
