No, your New York sourced-income is 100% taxed by NY, even though you didn't live there. In the Non-Resident NY state interview, you will be asked to indicate what portion of your Federal wages belongs to New York (all of it).
Your Resident State will also tax your New York income (as they tax all of your income), but gives you a credit for tax paid to New York, so you are not double-taxed.
Click this link for more info on How to File a Non-Resident State Return.
Yes, the New York Form IT-203 is the correct form for your return. You don't need the IT-558 mentioned in this thread.
@Bullman23
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
