How to enter part-year dates when student spent 3 summer months of internship in NY, the rest in Virginia. The question "on which date did you move into NY" can't be answered; unless I artificially give him 3 different months Oct-Nov-Dec. Same question in part-year VA.

So perhaps I'd best say he's a full-yr VA resident and use OSC as an attachment to VA. Should he pay NY fully on 34K because JP Morgan is in fact "sourced" in NY. But why does the W-2 give him $20K VA wage. I'm confused.